That is us done and dusted for today. See you around the corner.
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Adam Bailey: Great to see Mo Farah doing what he does best....running but also winning.
Hayley Lloyd: Brilliant @Mo_Farah You were absolutely flying. Totally amazed by your talent.
Tomorrow
Getty ImagesCopyright: Getty Images
Tomorrow sees Jessica Ennis-Hill go again - this time in the long-jump and 200m - while London 2012 winners Greg Rutherford and David Rudisha also compete.
The evening is likely to end with a women's 100m that includes English Gardner, Murielle Ahoure and Blessing Okagbare-Ighoteguonor - three of the top four fastest in the world this year.
All done today
ReutersCopyright: Reuters
After difficult starts to the year, Usain Bolt and Mo Farah have come out the sort of class that successfully defends world title.
Bolt won the 100m in 9.87, Farah won the 3,000m in a world-leading time of 7:34.66. Elsewhere Jessica Ennis-Hill looked just dandy over the hurdles while there were promising sprint performances from CJ Ujah and Zharnel Hughes and a victory in the 1500m for Laura Weightman.
All in all a very pleasing night for the event's organiser and main draws.
Post update
Farah wins 3,000m
Gabby Logan and Denise Lewis win awards for courage under fire as they continue to chew the analytical fat while the GDP of a small nation goes up in smoke with an enormous firework display behind them.
Well done all.
Farah wins 3,000m
The Union Jacks are out in force. There is one draped across the slight frame of Farah as he heads off on his lap of honour and plenty is the crowd to greet the Londoner.
Farah breaks out the Mobot and an Eric Morecambe style aerial heel click in response to the cheers.
Farah wins 3,000m
Paula Radcliffe
Marathon world record holder and BBC Sport expert
"Mo Farah has rebuilt himself. He felt the support of the crowd tonight and he needed that after all the things that have been written in the newspapers. He's in really good shape."
Farah wins 3,000m
BBCCopyright: BBC
"You can only do what you do best and that, for me, is running," so says Mo Farah.
He adds that he was never worried about the crowd's reaction to him in the wake of the allegations over coach Alberto Salazar's methods.
Farah wins 3,000m
BBCCopyright: BBC
Mo Farah pulled Usain Bolt's Lightning Bolt pose after he crossed the line. The scamp.
Farah wins 3,000m
Brendan Foster
Olympic medallist and BBC athletics commentator
"Well done Mo Farah. Great to see him in great form and with the World Championships coming in Beijing, can he add to his collection of medals? He collects them like no-one else."
Farah wins 3,000m
Allison Curbishley
BBC athletics expert on Radio 5 live
"That was very impressive. It's so difficult to hit the bell and throw in a 55-second last lap. This is the Mo Farah we saw in 2012 and he's in the form of his life."
Farah wins 3,000m
Mo Farah wins in 7:34.66
BBCCopyright: BBC
Mo Farah's time is the fastest in the world this year. And he does not look hugely puffed either.
The rest of the field were choking on fumes. He is going to take some catching come Beijing.
Farah in 3000m
Mo Farah is going to win. And by some distance.
Post update
Mike Costello
Athletics commentator on BBC Radio 5 live
"What a show-closer here, the winner of double gold and hero of London 2012, in the lead at the bell."
Farah in 3000m
The wall of sound sweeps round the stadium pursuing Mo Farah round the track. One lap to go and as the bell sounds, Farah stretches his legs.
Farah in 3000m
Two laps to go and Mo Farah is chomping at the bit. He hits the front and turns up the heat under the rest of the field.
Farah in 3000m
1800m gone and it is Kenya's Emmauel Kipsang in front now. Mo Farah still sitting, waiting and watching in second.
Farah in 3000m
Veteran American Bernard Lagat and Ethiopia's Yenew Alamirew are among the field.
Gideon Gathimba is making the pace at the moment, with Mo Farah looks smooth and calm in third.
Farah in 3,000m
Mo Farah's name is read out to the crowd and is roared to the rafters.
If his public image has taken a hammering in the last few weeks, it has not dented his appeal among this crowd.
Farah in 3,000m
BBCCopyright: BBC
Post update
Paula Radcliffe
Marathon world record holder and BBC Sport expert
"This is where the crowd want to see Mo Farah perform."
Mo Farah next up in 3,000m
ReutersCopyright: Reuters
Usain Bolt gives Mo Farah an encouraging hug as he strolls past the men's 3000m start on his lap of honour.
Farah, a double Olympic champion, has his own business to deal with.
A time that was just 0.12 seconds outside his British record in the Monaco 1500m suggests he is in the form to seal the deal.
Farah in 3,000m
Darren Campbell
BBC Sport athletics expert on Radio 5 live
ReutersCopyright: Reuters
"There's a lot of love inside this stadium for Mo Farah and he will want to reward everyone who has come out in these conditions."
Usain Bolt wins 100m
AFPCopyright: AFP
So, where does Usain Bolt's time of 9.87 seconds put him in the broader context?
It makes him equal sixth in the world this year - alongside Tyson Gay.
Justin Gatlin, Asafa Powell, Trayvon Bromell, Keston Bledman and Jimmy Vicault are the men to have gone faster.
Usain Bolt wins 100m
BBCCopyright: BBC
Usain Bolt, speaking to BBC Sport: "Overall, it was a good run. My start was really poor. My coach keeps telling to me relax. I want to run faster and it is getting there.
"The first race was very smooth and I was very happy with what I did. In the final, I got a bad start and it all went downhill from there.
"It is hard work and dedication. I just need to keep pushing myself. I feel pretty good. If I continue to work on my start, it will all be good.
"I really love this crowd and I enjoy competing here. One of my most favourite moments was the 200m in London in 2012."
Usain Bolt wins the 100m
Colin Jackson
Two-time world 110m hurdles champion on BBC TV
ReutersCopyright: Reuters
"It was all about the start. Usain Bolt was in the middle of the field and had to haul himself to the win."
Usain Bolt wins the 100m
Steve Cram
BBC athletics commentator
"Usain Bolt is back in business, back to where he belongs, back to the top of the pile."
Men's 100m final
Usain Bolt wins in 9.87
ReutersCopyright: Reuters
It was a stinker of a start, but Usain Bolt came on strong as he does.
Michael Rodgers and Kemar Bailey-Cole were next home. CJ Ujah - British champion - was fourth in a PB-equalling 9.96.
Men's 100m final
Where's the challenge going to come from?
Well, look for Michael Rodgers and Jimmy Vicault in the two lanes outside Bolt as well as compatriot Kemar Bailey-Cole.
Men's 100m final coming up
Usain Bolt looks like he has re-discovered his strut after that 9.87 seconds in the heats. He wanders around the Olympic Stadium track, looking around like a homeowner inspecting the builders' work.
"Like what you have done with the place. Like a bit of footy myself."
The arms are loose as he does some Bruce Grobbelaar spaghetti limbering up as his name is read out.
Post update
Mike Costello
Athletics commentator on BBC Radio 5 live
"Can we ever get enough of this man? Flashlights all around the stadium, a party atmosphere here, but for Usain Bolt it's a serious night of competition for him."
Post update
Men's 100m final coming up
BBCCopyright: BBC
The men's 100m field make their way on to the track, tracksuited up and with backpacks in place ready to swallow the warming layers in the last minute.
Bolt looking cool and calm, as he does.
110m hurdles final
Jason Richardson wins in 13.19
AFPCopyright: AFP
We think....it was close.
Yep, by three hundredths of a second.
Frenchman Pascal Martinot-Legarde was at the front of the field but smashed into the final flight of hurdles and was sapped of his pace at the crucial time.
Richardson took advantage. Britons Clarke and Omoregie were eighth and ninth respectively.
110m hurdles final
Right, the high hurdlers are back in the house.
Aries Merritt, the Olympic champion, is in lane seven, but the favourites are Pascal Martinot-Lagarde and Orlando Ortega.
Britons Lawrence Clarke and David Omoregie fill the two outside lanes.
Laura Weightman wins 1500m
BBCCopyright: BBC
Laura Weightman, speaking to BBC Sport: "That was incredible. It is the first time I have been here since the Olympics. I thought this is my track, my race and I gave myself a boost. I was really pleased with that.
"The minute I walked out, I got a smile across my face. The reception I got from the crowd is why I won. the last 20-30m showed I was not going to let anyone pass me."
Laura Weightman wins 1500m
Paula Radcliffe
Marathon world record holder and BBC Sport expert
"You could see the weight lifted off Laura Weightman. She is in shape but she dug deep to win and now she can go on from here."
Hughes leads Diamond Race standings
After his win tonight Britain's Zharnel Hughes is leading the Diamond League standings.
If he stays there over the next two races he will be £25,000 richer. Nice work.
Laura Weightman wins 1500m
Brendan Foster
Olympic medallist and BBC athletics commentator
ReutersCopyright: Reuters
"That is a good run from Laura Weightman. She had a big smile across her face on the start line, she experienced the Olympic Stadium in 2012 and now she executed her plan which will have delighted her. She was here to impress and she needed this one."
Women's 1500m
Laura Weightman wins in 4:06.11
ReutersCopyright: Reuters
That was a punchy run from Laura Weightman. She hit the front with a lap to go and put the hammer down.
American Gabriele Grunewald had a nibble at her, but Weightman was not letting go of that lead.
When the Mobot met the Lightning Bolt
PACopyright: PA
Will we see this at the end of the night? Farah and Bolt celebrating after brilliant, dazzling wins? We'll find out shortly...
Bolt goes in the 100m final at 21:29 and Farah takes on the 3,000m at 21:43.
Women's 1500m
A bit of hoo-ha over the electronic starter gun which sparks but fails to make a bang.
Not a great advert for the international luxury watchmaker who have their brand plastered over the dud firearm.
Never mind. We are finally under way and Laura Weightman is well positioned in second, lurking behind Gudaf Tsegay.
Women's 1500m
Britain's Laura Weightman, who works with Steve Cram, made the final of London 2012.
She goes in this reprise.
Alongside her are fellow Brits Jessica Judd and Steph Twell.
None of the top eight from Monaco will race in the wake of Genzebe Dibaba's incredible world record of 3:50.07 minutes in the Diamond League last week.
Post update
Love for Zharnel from Martyn Rooney, two-time Olympian for Great Britain,
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London 2012 memories
Alison Gill: Watching my daughter dance in the opening ceremony on TV having spent my birthday watching the rehearsal at the stadium.
Dan King: That amazing 45 minutes on Super Saturday when Ennis, Rutherford and Farah went Gold x3. What a night.
Joshi B: People actually talking to each other on public transport and on the London Underground!
Zharnel Hughes wins 200m in 20.05
ReutersCopyright: Reuters
Britain's Zharnel Hughes, speaking to BBC Sport: "I was not expecting the personal best because of the weather conditions. The people of London have been amazing and I am thankful for the support. I will try to continue to make you proud. Maybe I can go sub-20 seconds."
Zharnel Hughes wins 200m in 20.05
PACopyright: PA
Zharnel Hughes gives a little look to the camera as he reveals that he is aiming to go sub-20 seconds this season.
No reason why the Briton can't after that commanding run.
Zharnel Hughes wins 200m in 20.05
Darren Campbell
BBC Sport athletics expert on Radio 5 live
"Zharnel Hughes didn't panic, stayed calm and knew that his strength would pay off in the home straight and trusted his race plan. He has a fantastic rhythm."
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Zharnel Hughes wins 200m in 20.05
Steve Cram
BBC athletics commentator
"What a run from Zharnel Hughes, Britain have a new talent here."
Zharnel Hughes wins 200m in 20.05
A lifetime best and the third best time in British history - only John Regis and Adam Gemili have ever gone quicker.
It was into a headwind as well.
It was a run that showed killer instinct as well. Zharnel Hughes came on strong, lengthening his stride to pull clear of Dedric Dukes.
Men's 200m
Next up on track is the men's 200m with Britain's newest sprint hope Zharnel Hughes.
Originally from from the British Overseas Territory of Anguilla, he broke Yohan Blake's 100m youth record and since representing Britain has become national champion and become the country's first Diamond League winner over 100m or 200m.
America's Dedric Dukes is the only man in the field to have gone under 20 seconds this season - running 19.86 to finish second at the NCAA Championships in Eugene.
"I don't know yet," Jessica tells BBC Radio 5 live. "You need to have seven strong events in the heptathlon and I need to make sure I am where I need to be."
Women's 100 hurdles
ReutersCopyright: Reuters
Jessica Ennis-Hill is using the Anniversary Games as a bit of an MOT to see if she is in good enough shape to compete for a heptathlon medal.
Hurdles? A pass with flying colours.
Long jump and 200m are the other two categories she wants to see good results in this weekend with a place in the World Championship squad hers for the having if she wants it.
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Good news for a Brit
AFPCopyright: AFP
Jessica Ennis-Hill, talking to BBC Sport after her 100m hurdles: "I am made up, such an adrenaline rush to be back here. I am finally finding my form at the right part of the season. It is incredible to be back here. I was thinking about how it would feel. You can't quite put into words until you step onto the track. The crowd are so loud."
Women's 100m hurdles
Ennis-Hill comes fifth
Allison Curbishley
BBC athletics expert on Radio 5 live
"Jessica Ennis-Hill got out and attacked that first hurdle. Ennis was zippy over the hurdles at her best but hasn't quite got that on her trail leg at the moment, but she has so much determination."
Women's 100m hurdles
Ennis-Hill comes fifth
Colin Jackson
Two-time world 110m hurdles champion on BBC TV
"Jessica Ennis-Hill is a natural hurdler. At her best, she can compete with these women. She'll be very comfortable and happy with that time."
Women's 100m hurdles
Jasmin Stowers wins in 12.47
AFPCopyright: AFP
A strong start from Jessica Ennis-Hill, before the Americans sweep through with Jasmin Stowers leading them home.
Ennis-Hill clocked 12.79 to come home in fifth. Tiffany Porter was just ahead finishing fourth in 12.79.
Women's 100m hurdles
USA trio Jasmin Stowers, Dawn Harper-Nelson and Lolo Jones are more likely to take the win than Jessica Ennis-Hill.
Women's 100m hurdles
PACopyright: PA
Next up is Jessica Ennis-Hill, who has acquired an extra surname and a son called Reggie since her glorious heptathlon gold in 2012.
She is competing in the 100m hurdles, aiming to break 13 seconds.
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London 2012 memories
James Gloyn: The national anthem when Jess Ennis received her gold medal, such a proud feeling for the Brits in the stadium.
Andrew Wakefield: In the stadium to see Bolt win 200m, Rudisha break world record & David Weir win 1500m. How can I choose between those?
Mark Ward: Without a doubt Mo winning the 5,000m. I was lucky enough to be on the home straight - never heard noise like it.
Bolt wins 100m heat
I have a couple of dates for your diary, one short notice, one slightly longer.
First, tonight's 100m final is at 21:29 BST.
Second, the world 100m final is the evening of Sunday 23 August.
The former will be big. The latter will be absolutely massive.
Bolt wins 100m heat in 9.87 seconds
Denise Lewis
Olympic heptathlon gold medallist on BBC TV
"Staggering. You know Usain Bolt is capable of doing that. There was no evidence he could produce that time in these conditions. You have to say, his team have primed him for these championships. He has owed us this."
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Bolt wins 100m heat in 9.87 seconds
Colin Jackson
Two-time world 110m hurdles champion on BBC TV
"I am speechless. Usain Bolt loosens the stride then just shut down with a cheeky smile. He is saying I am here, I am back. When he runs like that, he is unbeatable. He just chills out and enjoys his running."
Bolt wins 100m heat in 9.87 seconds
AFPCopyright: AFP
Michael Rodgers second in 9.92 and Kim Collins is third in 10.02.
British champion CJ Ujah is fourth in 10.04 seconds - a season's best - and that might well be good enough for a spot in the final at 21:29 BST.
Bolt wins 100m heat in 9.87 seconds
Darren Campbell
BBC Sport athletics expert on Radio 5 live
"Fantastic run from Bolt. He's back! That was very impressive. His start wasn't good but he didn't tense up and he was relaxed and opened up his stride."
Bolt wins 100m heat in 9.87 seconds
Steve Cram
BBC athletics commentator
"You're kidding me? Really? 9.87 in a headwind and he was jogging."
Bolt wins 100m heat
Bolt wins in 9.87
Slap! That is the sound of a gauntlet being laid down.
An extraordinary time as Bolt jogs home on a wet track, into a head wind with plenty to spare.
Justin Gatlin? You have company.
Bolt in 100m heats
Kilty disqualified
ReutersCopyright: Reuters
Richard Kilty is sent back to the changing room. He is furious and aims a little shove at the officials chest en route.
100m heats - false start!
False start!
Is it Usain Bolt? A concerned hush in the crowd. I don't think it is.
I think Richard Kilty could be the man in trouble.
Bolt in 100m heats
BBCCopyright: BBC
Usain Bolt indulges in a bit of clowning as his name is read out to the crowd.
But is there something a little sheepish, a little nervous, in that smile.
His confidence tanks are a little lower than the usual overflowing.
Showtime...
Bolt in 100m heats
BBC SportCopyright: BBC Sport
It won't just be about where Usain Bolt finishes tonight, it will be about spotting a sparkle of that irresistible stardust that he has at his best.
He is up against British champion Chijindu Ujah and Kim Collins - whose next birthday will be his 40th - in this heat.
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Bolt in 100m heats
AFPCopyright: AFP
Bolt beats Blake to win 100m gold in London... he defied the critics then, can he do it again and win tonight?
Bolt under pressure - men's 100m heats
BBCCopyright: BBC
Men's 100m heats
Steve Cram
BBC athletics commentator
"For Harry Aikines-Aryeetey, this is disappointing. Not a good performance."
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Men's 100m heats
Kemar Bailey-Cole wins in 10.02
There is something of the Usain Bolt's about Kemar Bailey-Cole.
A terrible start, before the Jamaican cranks his angular lanky frame into life, starts eating up the yards and takes victory.
France's Jimmy Vicaut and Nesta Carter, another Jamaican, were the next home. They qualify automatically.
Harry Aikines-Aryeetey was first home of the Britons in 10.33, but I don't think he will be heading to the final.
Men's 100m heats
The first heat includes perhaps the main threats to Usain Bolt tonight.
Kemar Bailey-Cole and Nesta Carter of Jamaica, Ryan Bailey of the United States and Jimmy Vicaut of France have all gone sub-10 seconds this season.
Britain's trio in this heat is led by Harry Aikines-Aryeetey.
Post update
Aimee Lewis
BBC Sport at Queen Elizabeth Olympic Park
"I'm back again," says a smiling Mo Farah, appearing on the big screen, and the crowd cheer the double Olympic champion. But those cheers are nothing compared with the roar which greets the bicep-flexing granite-jawed sprinters.
Bolt - 15 minutes away
BBCCopyright: BBC
'Miles' equates to 0.38 seconds.
That is the difference between Justin Gatlin's best time this year (9.74) and Bolt's (10.12).
Gatlin, what with the doping convictions and all, is barred from this meet as a matter of policy.
Bolt has a chance to lay down a marker and show that he can make up the difference in time for next month's World Championships in Beijing.
Women's 400m hurdles
BBCCopyright: BBC
Eilidh Child, who came fourth, talking to BBC Sport: "I have had some hard training and I was happy with that. I executed the race well and there is more to build on come Beijing."
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Women's 400m hurdles
Zuzana Hejnova wins in 54.00
ReutersCopyright: Reuters
That was a commanding run from Zuzana Hejnova who kept her cool when Cassandra Tate went flying out of the blocks outside her.
Georgeanne Moline took second ahead of fellow American Tate with Eilidh Child fourth for Great Britain.
A season's best of 55.37 from Meghan Beesley on the outside.
Women's 400m hurdles
World champion Zuzana Hejnova of the Czech Republic lining up against European champion Eilidh Child is the match-up to watch in this one.
Britain's Meghan Beesley might have a dry run in lane nine near the crowd and might be worth keeping an eye on.
Key times
So much to come whether you are following on BBC Two, Radio 5 live, this live text or all three:
20:41 BST - women's 100m hurdles - Ennis-Hill, Harper-Nelson, Porter
21:29 BST - men's 100m final
21:43 BST - men's 3,000m - Farah
Men's pole vault postponed
ReutersCopyright: Reuters
French top dog Renaud Lavillenie was the trendsetter.
The rest of the field have come around to his way of thinking and are going to come back tomorrow when hopefully it will be a little drier.
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London 2012 memories
Nexus Rob: Watching the legend that is sir @chrishoy.....and his mum's homemade sign. Brilliant! Just brilliant!
Harry Taylor: Bradley Wiggins and @chrisfroome winning the gold and bronze in the men's time trial.
Men's pole vault
AFPCopyright: AFP
It is still lobbing it down in stair-rods.
And French Olympic champion Renaud Lavillenie does not like the look of this.
He is likely to withdraw from the pole vault that starts in a couple of moments, barring an improbable upturn in conditions.
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110m hurdles
Jason Richardson wins in 13.30
ReutersCopyright: Reuters
Jason Richardson is followed home by Frenchman Pascal Martinot-Lagarde and, a surprise this, Great Britain's European under-23 champion David Omoregie.
That is a new PB for Omoregie - 13.50.
Jeff Porter in fourth is through to the final at 21:17, as is Britain's Lawrence Clarke from the first heat.
110m hurdles
As the rain continues to hammer down, it is time for the second heat of the men's 110m hurdles.
Former world champion Jason Richard of the US goes in this one, along with Jeff 'husband of Tiffany' Porter.
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Mo's woes
Brendan Foster
Olympic medallist and BBC athletics commentator
"If Mo only had to run, he would be fine. I feel sorry for him, he is the greatest distance runner we have ever had. He has the mantel of the greatest ever and he sometimes doesn't live up to that because he lets himself down.
"Whatever anyone thinks or says about him, he is amazing. If i was in his position, I would find it difficult to compete. Despite everything, he still runs great."
Mo Farah runs at 21:43 BST.
Post update
Aimee Lewis
BBC Sport at Queen Elizabeth Olympic Park
Puddles are forming on the track and organisers have seen enough - the discus has been temporarily suspended. It's not the sort of night you want to be flinging a metal disc into the air.
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London 2012 memories
Miles: Bolt taking 100m and 200m gold. I even remember the commentary. The champion becomes a legend.
Richard Crighton: Genuinely changed the country for the better over those few weeks. Great atmosphere.
Paul B: Not from the stadium, but Gemma Gibbons reaction winning the judo semi-final. Proper lump-in-the-throat moment.
"Isn't Orlando Ortega a lovely hurdler? The Cubans have a way of developing good hurdlers. No panic, head perfectly still and he manoeuvres himself over those barriers."
110m hurdles
Orlando Ortega wins in 13.21
AFPCopyright: AFP
Orlando Ortega is the first of three men to qualify for the final which is just after 21:00 BST tonight.
Ronnie Ash and Aries Merritt are also through automatically. Lawrence Clarke who ran a creditable 13.41 in the wet is waiting to see if he is the fastest loser.
110m hurdles
On track now, as well as some increasingly heavy rain, are the 110m hurdlers.
The fastest man in the world this year - Cuba's Orlando Ortega - is in lane five alongside American world-record holder and Olympic champion Aries Merritt.
Britain's Lawrence Clarke is also in this first heat.
PACopyright: PA
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Aimee Lewis
BBC Sport at Queen Elizabeth Olympic Park
It was too good to be true. There was, momentarily at least, some light, some respite from the rain, but it didn't last. The sky, the colour of unhappiness, is leaking once again.
That is perhaps why Lord Seb Coe is in the sanctuary of the VIP bar where those in suits and nice heels are sipping complimentary vin rouge while the rest of us are dodging raindrops. Bitter? Not at all, not even when the rain falls from the leaking roof and down my back.
Bolt on his way
BBCCopyright: BBC
He is the 62nd fastest man in the world over 100m this year. Britons Chijindu Ujah and Richard Kilty, who will be racing him tonight, have both gone quicker.
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London 2012 memories
Getty ImagesCopyright: Getty Images
Kevin Burgum: Had to be when watching Mo Farah win his second gold whilst on a tube train back from the Great British Beer Festival in Olympia. I had a crowd of people surrounding my tiny iPhone screen all shouting in unison "go on Mo!". He crossed the line just before we entered a tunnel and lost the signal. A truly special moment and a fantastic memory!
Sebastian Ampofo: Super Saturday was amazing - whole family around the TV, watching three great sporting moments. Steve Cram's commentary of Mo Farah winning the 5,000m gold was a brilliant moment.
Women's 4x100m
Colin Jackson
Two-time world 110m hurdles champion on BBC TV
"This is the type of race the GB girls need. A high-quality race to see how far they can stretch themselves. We are tough critics now but the women will be thinking, 'what can we do to improve?' They know they are a world-class team."
Women's 4x100m
USA win in 42.32 seconds
Getty ImagesCopyright: Getty Images
Sandra Richards-Ross blows kisses down the barrel of the camera, back down the track to her team-mates and to most of the crowd. Enchante.
Not a brilliant display by Britain - Jodie Williams was smoked by Dafne Schippers on the back straight - who came home third behind the Netherlands.
Women's 4x100m
Next up is the women's 4x100m relay.
The British quartet is made up for Dina-Asher Smith on the opening leg, followed by Jodie Williams, Bianca Williams and Desiree Henry.
Watch out for the Netherlands, with Dafne Schippers, and the United States, with Sandra Richards-Ross anchoring, at the front of the field.
Women's 400m
Paula Radcliffe
Marathon world record holder and BBC Sport expert
"Christine Ohurougu knows herself she is moving forward. She is very level headed and will just stay calm and work towords Beijing."
Women's 400m
AFPCopyright: AFP
Christine Ohurougu, who finished fourth, talking to BBC Sport: "I will take that. I am happy after last week so I won't complain. Last time I won here, but that is OK.
"I have had a few challenges this year but I just work for it. I seem to put myself under pressure but happy I turned out and did the job I did."
Women's 400m
Two other Britons were in the race.
Anyika Onurora, who beat Ohuruogu to the British title in Birmingham, could not get close to the personal best of 51.26 that she set in Lausanne on 9 July, finishing eighth in 51.51 after a fast start.
Seren Bundy-Davies will be happiest of all the Brits, clocking a new personal best of 51.48.
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Steve Cram
BBC athletics commentator
"Christine Ohuruogu did make progress in the home straight but the jigsaw is still missing a few pieces. It is moving forward but she still has a another few weeks. She will be a little bit disappointed."
Women's 400m
Natasha Hastings wins in 50.25
ReutersCopyright: Reuters
Natasha Hastings of the United States matches her season's best time with a commanding run, beating home compatriot Francena McCorory.
Christine Ohuruogu was down in fourth, running 51:00.
Women's 800m
AFPCopyright: AFP
Right, down to matters in 2015.
First up is the women's 400m.
Local girl Christine Ohuruogu, a gold-medallist at Beijing 2008, a silver medallist at London 2012, registers the biggest cheers.
Last week she finally kicked off her 2015 season in Monaco, clocking her fastest time (50.82) since winning World Championship gold in 2013.
America's Francena McCorory and Jamaican pair Stephenie Ann McPherson and Christine Day will provide stiff competition.
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BBC SportCopyright: BBC Sport
'Super Saturday' was a memorable one for Britain and especially Mo Farah as he secured gold in the 10,000m.
BBC One commentators Denise Lewis, Colin Jackson, Michael Johnson and John Inverdale could hardly contain their excitement.
"Jessica Ennis-Hill is going to need strong indicators whether she is going to be on the plane with Team GB to Brazil next year. The conditions aren't great but she is experienced enough to know hw competitive she is."
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Steve Cram
BBC athletics commentator
"I met him today and Mo Farah is happy and relaxed, he is really looking forward to running this evening. Mo is reliving nice memories and we will see him run fast and win. He WILL win unless he trips up and falls over. The crowd will love it and Mo will go back to altitude training, waiting to run in Beijing."
20:41 BST - women's 100m hurdles - Ennis-Hill, Harper-Nelson, Porter
21:29 BST - men's 100m final
21:43 BST - men's 3,000m - Farah
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Aimee Lewis
BBC Sport at Queen Elizabeth Olympic Park
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Usain Bolt's fans are loyal. Rain? Pah. Wind? It doesn't matter. Jacqui Graham (on the left) and her aunt Marvela Laing are here with their family and even the rain, bouncing into the face rain, won't stop them seeing the fastest man in history in action.
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And bang on cue, here is Gabby Logan on BBC Three sheltering beneath a brolly as the pitter-patter of rain-drops are picked up on her microphone.
You can watch on the live coverage tab on this very page.
You've just missed a goose-bump fest of a montage...
It's raining
Aimee Lewis
BBC Sport at Queen Elizabeth Olympic Park
ReutersCopyright: Reuters
"Only one man would enjoy performing in this sort of weather and, alas, Gene Kelly has long since left us. Every event might turn into a steeplechase if the rain-filled clouds continue to spectacularly dump their load over east London. Even the capital's ducks have gone into hiding.
"Usain Bolt, though, has run well in the rain before - winning his 100m world title on a thundery night in Moscow. The Olympic champ was in better form back then, of course."
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But don't let current affairs ruin the warm afterglow from three years ago. Let's bask a little longer.
We are after your personal stories of watching the London 2012 Olympics tonight.
One of my colleagues has revealed he was hanging out of a tree to get a viewing angle on a big screen for Mo Farah's 10,000m win on Super Saturday.
"Bolt has to run quickly to give himself the belief. He doesn't lack confidence but he needs to know he's close to running 9.7 seconds. He has to run under 10 seconds tonight. He's being scrutinised by the athletics world."
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ReutersCopyright: Reuters
As much as this event encourages happy nostalgia, the mood around athletics is not nearly as giddy as it was in high summer two years ago.
Usain Bolt has been struggling for form and fitness this season - clocking a modest 10.12 in his one go over 100m this season and struggling with a pelvic twinge the rest of the time.
And the spectre of Justin Gatlin - twice convicted of doping but back on the track and tearing up trees as a 33-year-old - hangs over the sport ahead of the world championships in Beijing next month.
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Bolt back in town
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So, we come to the first of three nights of the second Anniversary Games.
And as well as messrs Farah, Ennis and Rutherford re-tracing their steps to Olympic glory, we have athletics' high chief himself - Usain Bolt - to keep the party jumping.
Three of the 28-year-old Jamaican's six Olympic gold medals came at London 2012. He has eight world titles to keep them company back in his own personal Fort Knox. Extraordinary numbers from an extraordinary man.
He takes on the the best of British in the likes of Chijindu Ujah, James Dasaolu and Richard Kilty in the 100ms with heats at 20:17 BST and the final at 21:29 BST.
Golden years
AFPCopyright: AFP
2012. What a summer it was to be alive.
When Team GB found a timely midas touch and one corner of east London really was paved with gold.
Mo? Jess? Greg? Any time you want to reform the band to rock the Olympic Stadium once more is just fine by me.
Live Reporting
Mike Henson
All times stated are UK
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Latest PostPost update
That is us done and dusted for today. See you around the corner.
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Adam Bailey: Great to see Mo Farah doing what he does best....running but also winning.
Hayley Lloyd: Brilliant @Mo_Farah You were absolutely flying. Totally amazed by your talent.
Tomorrow
Tomorrow sees Jessica Ennis-Hill go again - this time in the long-jump and 200m - while London 2012 winners Greg Rutherford and David Rudisha also compete.
The evening is likely to end with a women's 100m that includes English Gardner, Murielle Ahoure and Blessing Okagbare-Ighoteguonor - three of the top four fastest in the world this year.
All done today
After difficult starts to the year, Usain Bolt and Mo Farah have come out the sort of class that successfully defends world title.
Bolt won the 100m in 9.87, Farah won the 3,000m in a world-leading time of 7:34.66. Elsewhere Jessica Ennis-Hill looked just dandy over the hurdles while there were promising sprint performances from CJ Ujah and Zharnel Hughes and a victory in the 1500m for Laura Weightman.
All in all a very pleasing night for the event's organiser and main draws.
Post update
Farah wins 3,000m
Gabby Logan and Denise Lewis win awards for courage under fire as they continue to chew the analytical fat while the GDP of a small nation goes up in smoke with an enormous firework display behind them.
Well done all.
Farah wins 3,000m
The Union Jacks are out in force. There is one draped across the slight frame of Farah as he heads off on his lap of honour and plenty is the crowd to greet the Londoner.
Farah breaks out the Mobot and an Eric Morecambe style aerial heel click in response to the cheers.
Farah wins 3,000m
Paula Radcliffe
Marathon world record holder and BBC Sport expert
"Mo Farah has rebuilt himself. He felt the support of the crowd tonight and he needed that after all the things that have been written in the newspapers. He's in really good shape."
Farah wins 3,000m
"You can only do what you do best and that, for me, is running," so says Mo Farah.
He adds that he was never worried about the crowd's reaction to him in the wake of the allegations over coach Alberto Salazar's methods.
Farah wins 3,000m
Mo Farah pulled Usain Bolt's Lightning Bolt pose after he crossed the line. The scamp.
Farah wins 3,000m
Brendan Foster
Olympic medallist and BBC athletics commentator
"Well done Mo Farah. Great to see him in great form and with the World Championships coming in Beijing, can he add to his collection of medals? He collects them like no-one else."
Farah wins 3,000m
Allison Curbishley
BBC athletics expert on Radio 5 live
"That was very impressive. It's so difficult to hit the bell and throw in a 55-second last lap. This is the Mo Farah we saw in 2012 and he's in the form of his life."
Farah wins 3,000m
Mo Farah wins in 7:34.66
Mo Farah's time is the fastest in the world this year. And he does not look hugely puffed either.
The rest of the field were choking on fumes. He is going to take some catching come Beijing.
Farah in 3000m
Mo Farah is going to win. And by some distance.
Post update
Mike Costello
Athletics commentator on BBC Radio 5 live
"What a show-closer here, the winner of double gold and hero of London 2012, in the lead at the bell."
Farah in 3000m
The wall of sound sweeps round the stadium pursuing Mo Farah round the track. One lap to go and as the bell sounds, Farah stretches his legs.
Farah in 3000m
Two laps to go and Mo Farah is chomping at the bit. He hits the front and turns up the heat under the rest of the field.
Farah in 3000m
1800m gone and it is Kenya's Emmauel Kipsang in front now. Mo Farah still sitting, waiting and watching in second.
Farah in 3000m
Veteran American Bernard Lagat and Ethiopia's Yenew Alamirew are among the field.
Gideon Gathimba is making the pace at the moment, with Mo Farah looks smooth and calm in third.
Farah in 3,000m
Mo Farah's name is read out to the crowd and is roared to the rafters.
If his public image has taken a hammering in the last few weeks, it has not dented his appeal among this crowd.
Farah in 3,000m
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Paula Radcliffe
Marathon world record holder and BBC Sport expert
"This is where the crowd want to see Mo Farah perform."
Mo Farah next up in 3,000m
Usain Bolt gives Mo Farah an encouraging hug as he strolls past the men's 3000m start on his lap of honour.
Farah, a double Olympic champion, has his own business to deal with.
A time that was just 0.12 seconds outside his British record in the Monaco 1500m suggests he is in the form to seal the deal.
Farah in 3,000m
Darren Campbell
BBC Sport athletics expert on Radio 5 live
"There's a lot of love inside this stadium for Mo Farah and he will want to reward everyone who has come out in these conditions."
Usain Bolt wins 100m
So, where does Usain Bolt's time of 9.87 seconds put him in the broader context?
It makes him equal sixth in the world this year - alongside Tyson Gay.
Justin Gatlin, Asafa Powell, Trayvon Bromell, Keston Bledman and Jimmy Vicault are the men to have gone faster.
Usain Bolt wins 100m
Usain Bolt, speaking to BBC Sport: "Overall, it was a good run. My start was really poor. My coach keeps telling to me relax. I want to run faster and it is getting there.
"The first race was very smooth and I was very happy with what I did. In the final, I got a bad start and it all went downhill from there.
"It is hard work and dedication. I just need to keep pushing myself. I feel pretty good. If I continue to work on my start, it will all be good.
"I really love this crowd and I enjoy competing here. One of my most favourite moments was the 200m in London in 2012."
Usain Bolt wins the 100m
Colin Jackson
Two-time world 110m hurdles champion on BBC TV
"It was all about the start. Usain Bolt was in the middle of the field and had to haul himself to the win."
Usain Bolt wins the 100m
Steve Cram
BBC athletics commentator
"Usain Bolt is back in business, back to where he belongs, back to the top of the pile."
Men's 100m final
Usain Bolt wins in 9.87
It was a stinker of a start, but Usain Bolt came on strong as he does.
Michael Rodgers and Kemar Bailey-Cole were next home. CJ Ujah - British champion - was fourth in a PB-equalling 9.96.
Men's 100m final
Where's the challenge going to come from?
Well, look for Michael Rodgers and Jimmy Vicault in the two lanes outside Bolt as well as compatriot Kemar Bailey-Cole.
Men's 100m final coming up
Usain Bolt looks like he has re-discovered his strut after that 9.87 seconds in the heats. He wanders around the Olympic Stadium track, looking around like a homeowner inspecting the builders' work.
"Like what you have done with the place. Like a bit of footy myself."
The arms are loose as he does some Bruce Grobbelaar spaghetti limbering up as his name is read out.
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Mike Costello
Athletics commentator on BBC Radio 5 live
"Can we ever get enough of this man? Flashlights all around the stadium, a party atmosphere here, but for Usain Bolt it's a serious night of competition for him."
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Men's 100m final coming up
The men's 100m field make their way on to the track, tracksuited up and with backpacks in place ready to swallow the warming layers in the last minute.
Bolt looking cool and calm, as he does.
110m hurdles final
Jason Richardson wins in 13.19
We think....it was close.
Yep, by three hundredths of a second.
Frenchman Pascal Martinot-Legarde was at the front of the field but smashed into the final flight of hurdles and was sapped of his pace at the crucial time.
Richardson took advantage. Britons Clarke and Omoregie were eighth and ninth respectively.
110m hurdles final
Right, the high hurdlers are back in the house.
Aries Merritt, the Olympic champion, is in lane seven, but the favourites are Pascal Martinot-Lagarde and Orlando Ortega.
Britons Lawrence Clarke and David Omoregie fill the two outside lanes.
Laura Weightman wins 1500m
Laura Weightman, speaking to BBC Sport: "That was incredible. It is the first time I have been here since the Olympics. I thought this is my track, my race and I gave myself a boost. I was really pleased with that.
"The minute I walked out, I got a smile across my face. The reception I got from the crowd is why I won. the last 20-30m showed I was not going to let anyone pass me."
Laura Weightman wins 1500m
Paula Radcliffe
Marathon world record holder and BBC Sport expert
"You could see the weight lifted off Laura Weightman. She is in shape but she dug deep to win and now she can go on from here."
Hughes leads Diamond Race standings
After his win tonight Britain's Zharnel Hughes is leading the Diamond League standings.
If he stays there over the next two races he will be £25,000 richer. Nice work.
Laura Weightman wins 1500m
Brendan Foster
Olympic medallist and BBC athletics commentator
"That is a good run from Laura Weightman. She had a big smile across her face on the start line, she experienced the Olympic Stadium in 2012 and now she executed her plan which will have delighted her. She was here to impress and she needed this one."
Women's 1500m
Laura Weightman wins in 4:06.11
That was a punchy run from Laura Weightman. She hit the front with a lap to go and put the hammer down.
American Gabriele Grunewald had a nibble at her, but Weightman was not letting go of that lead.
When the Mobot met the Lightning Bolt
Will we see this at the end of the night? Farah and Bolt celebrating after brilliant, dazzling wins? We'll find out shortly...
Bolt goes in the 100m final at 21:29 and Farah takes on the 3,000m at 21:43.
Women's 1500m
A bit of hoo-ha over the electronic starter gun which sparks but fails to make a bang.
Not a great advert for the international luxury watchmaker who have their brand plastered over the dud firearm.
Never mind. We are finally under way and Laura Weightman is well positioned in second, lurking behind Gudaf Tsegay.
Women's 1500m
Britain's Laura Weightman, who works with Steve Cram, made the final of London 2012.
She goes in this reprise.
Alongside her are fellow Brits Jessica Judd and Steph Twell.
None of the top eight from Monaco will race in the wake of Genzebe Dibaba's incredible world record of 3:50.07 minutes in the Diamond League last week.
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Love for Zharnel from Martyn Rooney, two-time Olympian for Great Britain,
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London 2012 memories
Alison Gill: Watching my daughter dance in the opening ceremony on TV having spent my birthday watching the rehearsal at the stadium.
Dan King: That amazing 45 minutes on Super Saturday when Ennis, Rutherford and Farah went Gold x3. What a night.
Joshi B: People actually talking to each other on public transport and on the London Underground!
Zharnel Hughes wins 200m in 20.05
Britain's Zharnel Hughes, speaking to BBC Sport: "I was not expecting the personal best because of the weather conditions. The people of London have been amazing and I am thankful for the support. I will try to continue to make you proud. Maybe I can go sub-20 seconds."
Zharnel Hughes wins 200m in 20.05
Zharnel Hughes gives a little look to the camera as he reveals that he is aiming to go sub-20 seconds this season.
No reason why the Briton can't after that commanding run.
Zharnel Hughes wins 200m in 20.05
Darren Campbell
BBC Sport athletics expert on Radio 5 live
"Zharnel Hughes didn't panic, stayed calm and knew that his strength would pay off in the home straight and trusted his race plan. He has a fantastic rhythm."
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Zharnel Hughes wins 200m in 20.05
Steve Cram
BBC athletics commentator
"What a run from Zharnel Hughes, Britain have a new talent here."
Zharnel Hughes wins 200m in 20.05
A lifetime best and the third best time in British history - only John Regis and Adam Gemili have ever gone quicker.
It was into a headwind as well.
It was a run that showed killer instinct as well. Zharnel Hughes came on strong, lengthening his stride to pull clear of Dedric Dukes.
Men's 200m
Next up on track is the men's 200m with Britain's newest sprint hope Zharnel Hughes.
Originally from from the British Overseas Territory of Anguilla, he broke Yohan Blake's 100m youth record and since representing Britain has become national champion and become the country's first Diamond League winner over 100m or 200m.
America's Dedric Dukes is the only man in the field to have gone under 20 seconds this season - running 19.86 to finish second at the NCAA Championships in Eugene.
Will Ennis-Hill go to the World Championships?
BBC Radio 5 live
"I don't know yet," Jessica tells BBC Radio 5 live. "You need to have seven strong events in the heptathlon and I need to make sure I am where I need to be."
Women's 100 hurdles
Jessica Ennis-Hill is using the Anniversary Games as a bit of an MOT to see if she is in good enough shape to compete for a heptathlon medal.
Hurdles? A pass with flying colours.
Long jump and 200m are the other two categories she wants to see good results in this weekend with a place in the World Championship squad hers for the having if she wants it.
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Good news for a Brit
Jessica Ennis-Hill, talking to BBC Sport after her 100m hurdles: "I am made up, such an adrenaline rush to be back here. I am finally finding my form at the right part of the season. It is incredible to be back here. I was thinking about how it would feel. You can't quite put into words until you step onto the track. The crowd are so loud."
Women's 100m hurdles
Ennis-Hill comes fifth
Allison Curbishley
BBC athletics expert on Radio 5 live
"Jessica Ennis-Hill got out and attacked that first hurdle. Ennis was zippy over the hurdles at her best but hasn't quite got that on her trail leg at the moment, but she has so much determination."
Women's 100m hurdles
Ennis-Hill comes fifth
Colin Jackson
Two-time world 110m hurdles champion on BBC TV
"Jessica Ennis-Hill is a natural hurdler. At her best, she can compete with these women. She'll be very comfortable and happy with that time."
Women's 100m hurdles
Jasmin Stowers wins in 12.47
A strong start from Jessica Ennis-Hill, before the Americans sweep through with Jasmin Stowers leading them home.
Ennis-Hill clocked 12.79 to come home in fifth. Tiffany Porter was just ahead finishing fourth in 12.79.
Women's 100m hurdles
USA trio Jasmin Stowers, Dawn Harper-Nelson and Lolo Jones are more likely to take the win than Jessica Ennis-Hill.
Women's 100m hurdles
Next up is Jessica Ennis-Hill, who has acquired an extra surname and a son called Reggie since her glorious heptathlon gold in 2012.
She is competing in the 100m hurdles, aiming to break 13 seconds.
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London 2012 memories
James Gloyn: The national anthem when Jess Ennis received her gold medal, such a proud feeling for the Brits in the stadium.
Andrew Wakefield: In the stadium to see Bolt win 200m, Rudisha break world record & David Weir win 1500m. How can I choose between those?
Mark Ward: Without a doubt Mo winning the 5,000m. I was lucky enough to be on the home straight - never heard noise like it.
Bolt wins 100m heat
I have a couple of dates for your diary, one short notice, one slightly longer.
First, tonight's 100m final is at 21:29 BST.
Second, the world 100m final is the evening of Sunday 23 August.
The former will be big. The latter will be absolutely massive.
Bolt wins 100m heat in 9.87 seconds
Denise Lewis
Olympic heptathlon gold medallist on BBC TV
"Staggering. You know Usain Bolt is capable of doing that. There was no evidence he could produce that time in these conditions. You have to say, his team have primed him for these championships. He has owed us this."
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Bolt wins 100m heat in 9.87 seconds
Colin Jackson
Two-time world 110m hurdles champion on BBC TV
"I am speechless. Usain Bolt loosens the stride then just shut down with a cheeky smile. He is saying I am here, I am back. When he runs like that, he is unbeatable. He just chills out and enjoys his running."
Bolt wins 100m heat in 9.87 seconds
Michael Rodgers second in 9.92 and Kim Collins is third in 10.02.
British champion CJ Ujah is fourth in 10.04 seconds - a season's best - and that might well be good enough for a spot in the final at 21:29 BST.
Bolt wins 100m heat in 9.87 seconds
Darren Campbell
BBC Sport athletics expert on Radio 5 live
"Fantastic run from Bolt. He's back! That was very impressive. His start wasn't good but he didn't tense up and he was relaxed and opened up his stride."
Bolt wins 100m heat in 9.87 seconds
Steve Cram
BBC athletics commentator
"You're kidding me? Really? 9.87 in a headwind and he was jogging."
Bolt wins 100m heat
Bolt wins in 9.87
Slap! That is the sound of a gauntlet being laid down.
An extraordinary time as Bolt jogs home on a wet track, into a head wind with plenty to spare.
Justin Gatlin? You have company.
Bolt in 100m heats
Kilty disqualified
Richard Kilty is sent back to the changing room. He is furious and aims a little shove at the officials chest en route.
100m heats - false start!
False start!
Is it Usain Bolt? A concerned hush in the crowd. I don't think it is.
I think Richard Kilty could be the man in trouble.
Bolt in 100m heats
Usain Bolt indulges in a bit of clowning as his name is read out to the crowd.
But is there something a little sheepish, a little nervous, in that smile.
His confidence tanks are a little lower than the usual overflowing.
Showtime...
Bolt in 100m heats
It won't just be about where Usain Bolt finishes tonight, it will be about spotting a sparkle of that irresistible stardust that he has at his best.
He is up against British champion Chijindu Ujah and Kim Collins - whose next birthday will be his 40th - in this heat.
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Bolt in 100m heats
Bolt beats Blake to win 100m gold in London... he defied the critics then, can he do it again and win tonight?
Bolt under pressure - men's 100m heats
Men's 100m heats
Steve Cram
BBC athletics commentator
"For Harry Aikines-Aryeetey, this is disappointing. Not a good performance."
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Men's 100m heats
Kemar Bailey-Cole wins in 10.02
There is something of the Usain Bolt's about Kemar Bailey-Cole.
A terrible start, before the Jamaican cranks his angular lanky frame into life, starts eating up the yards and takes victory.
France's Jimmy Vicaut and Nesta Carter, another Jamaican, were the next home. They qualify automatically.
Harry Aikines-Aryeetey was first home of the Britons in 10.33, but I don't think he will be heading to the final.
Men's 100m heats
The first heat includes perhaps the main threats to Usain Bolt tonight.
Kemar Bailey-Cole and Nesta Carter of Jamaica, Ryan Bailey of the United States and Jimmy Vicaut of France have all gone sub-10 seconds this season.
Britain's trio in this heat is led by Harry Aikines-Aryeetey.
Post update
Aimee Lewis
BBC Sport at Queen Elizabeth Olympic Park
"I'm back again," says a smiling Mo Farah, appearing on the big screen, and the crowd cheer the double Olympic champion. But those cheers are nothing compared with the roar which greets the bicep-flexing granite-jawed sprinters.
Bolt - 15 minutes away
'Miles' equates to 0.38 seconds.
That is the difference between Justin Gatlin's best time this year (9.74) and Bolt's (10.12).
Gatlin, what with the doping convictions and all, is barred from this meet as a matter of policy.
Bolt has a chance to lay down a marker and show that he can make up the difference in time for next month's World Championships in Beijing.
Women's 400m hurdles
Eilidh Child, who came fourth, talking to BBC Sport: "I have had some hard training and I was happy with that. I executed the race well and there is more to build on come Beijing."
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Women's 400m hurdles
Zuzana Hejnova wins in 54.00
That was a commanding run from Zuzana Hejnova who kept her cool when Cassandra Tate went flying out of the blocks outside her.
Georgeanne Moline took second ahead of fellow American Tate with Eilidh Child fourth for Great Britain.
A season's best of 55.37 from Meghan Beesley on the outside.
Women's 400m hurdles
World champion Zuzana Hejnova of the Czech Republic lining up against European champion Eilidh Child is the match-up to watch in this one.
Britain's Meghan Beesley might have a dry run in lane nine near the crowd and might be worth keeping an eye on.
Key times
So much to come whether you are following on BBC Two, Radio 5 live, this live text or all three:
20:17 BST - men's 100m heats - Bolt, Ujah, Dasaolu, Kilty, Aikines-Aryeetey
20:41 BST - women's 100m hurdles - Ennis-Hill, Harper-Nelson, Porter
21:29 BST - men's 100m final
21:43 BST - men's 3,000m - Farah
Men's pole vault postponed
French top dog Renaud Lavillenie was the trendsetter.
The rest of the field have come around to his way of thinking and are going to come back tomorrow when hopefully it will be a little drier.
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London 2012 memories
Nexus Rob: Watching the legend that is sir @chrishoy.....and his mum's homemade sign. Brilliant! Just brilliant!
Harry Taylor: Bradley Wiggins and @chrisfroome winning the gold and bronze in the men's time trial.
Men's pole vault
It is still lobbing it down in stair-rods.
And French Olympic champion Renaud Lavillenie does not like the look of this.
He is likely to withdraw from the pole vault that starts in a couple of moments, barring an improbable upturn in conditions.
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110m hurdles
Jason Richardson wins in 13.30
Jason Richardson is followed home by Frenchman Pascal Martinot-Lagarde and, a surprise this, Great Britain's European under-23 champion David Omoregie.
That is a new PB for Omoregie - 13.50.
Jeff Porter in fourth is through to the final at 21:17, as is Britain's Lawrence Clarke from the first heat.
110m hurdles
As the rain continues to hammer down, it is time for the second heat of the men's 110m hurdles.
Former world champion Jason Richard of the US goes in this one, along with Jeff 'husband of Tiffany' Porter.
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Mo's woes
Brendan Foster
Olympic medallist and BBC athletics commentator
"If Mo only had to run, he would be fine. I feel sorry for him, he is the greatest distance runner we have ever had. He has the mantel of the greatest ever and he sometimes doesn't live up to that because he lets himself down.
"Whatever anyone thinks or says about him, he is amazing. If i was in his position, I would find it difficult to compete. Despite everything, he still runs great."
Mo Farah runs at 21:43 BST.
Post update
Aimee Lewis
BBC Sport at Queen Elizabeth Olympic Park
Puddles are forming on the track and organisers have seen enough - the discus has been temporarily suspended. It's not the sort of night you want to be flinging a metal disc into the air.
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London 2012 memories
Miles: Bolt taking 100m and 200m gold. I even remember the commentary. The champion becomes a legend.
Richard Crighton: Genuinely changed the country for the better over those few weeks. Great atmosphere.
Paul B: Not from the stadium, but Gemma Gibbons reaction winning the judo semi-final. Proper lump-in-the-throat moment.
Great call Paul. I just watched it again - two and a half minutes into this video - and it is beautiful, beautiful moment.
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Colin Jackson
Two-time world 110m hurdles champion on BBC TV
"Isn't Orlando Ortega a lovely hurdler? The Cubans have a way of developing good hurdlers. No panic, head perfectly still and he manoeuvres himself over those barriers."
110m hurdles
Orlando Ortega wins in 13.21
Orlando Ortega is the first of three men to qualify for the final which is just after 21:00 BST tonight.
Ronnie Ash and Aries Merritt are also through automatically. Lawrence Clarke who ran a creditable 13.41 in the wet is waiting to see if he is the fastest loser.
110m hurdles
On track now, as well as some increasingly heavy rain, are the 110m hurdlers.
The fastest man in the world this year - Cuba's Orlando Ortega - is in lane five alongside American world-record holder and Olympic champion Aries Merritt.
Britain's Lawrence Clarke is also in this first heat.
Post update
Aimee Lewis
BBC Sport at Queen Elizabeth Olympic Park
It was too good to be true. There was, momentarily at least, some light, some respite from the rain, but it didn't last. The sky, the colour of unhappiness, is leaking once again.
That is perhaps why Lord Seb Coe is in the sanctuary of the VIP bar where those in suits and nice heels are sipping complimentary vin rouge while the rest of us are dodging raindrops. Bitter? Not at all, not even when the rain falls from the leaking roof and down my back.
Bolt on his way
He is the 62nd fastest man in the world over 100m this year. Britons Chijindu Ujah and Richard Kilty, who will be racing him tonight, have both gone quicker.
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London 2012 memories
Kevin Burgum: Had to be when watching Mo Farah win his second gold whilst on a tube train back from the Great British Beer Festival in Olympia. I had a crowd of people surrounding my tiny iPhone screen all shouting in unison "go on Mo!". He crossed the line just before we entered a tunnel and lost the signal. A truly special moment and a fantastic memory!
Sebastian Ampofo: Super Saturday was amazing - whole family around the TV, watching three great sporting moments. Steve Cram's commentary of Mo Farah winning the 5,000m gold was a brilliant moment.
Women's 4x100m
Colin Jackson
Two-time world 110m hurdles champion on BBC TV
"This is the type of race the GB girls need. A high-quality race to see how far they can stretch themselves. We are tough critics now but the women will be thinking, 'what can we do to improve?' They know they are a world-class team."
Women's 4x100m
USA win in 42.32 seconds
Sandra Richards-Ross blows kisses down the barrel of the camera, back down the track to her team-mates and to most of the crowd. Enchante.
Not a brilliant display by Britain - Jodie Williams was smoked by Dafne Schippers on the back straight - who came home third behind the Netherlands.
Women's 4x100m
Next up is the women's 4x100m relay.
The British quartet is made up for Dina-Asher Smith on the opening leg, followed by Jodie Williams, Bianca Williams and Desiree Henry.
Watch out for the Netherlands, with Dafne Schippers, and the United States, with Sandra Richards-Ross anchoring, at the front of the field.
Women's 400m
Paula Radcliffe
Marathon world record holder and BBC Sport expert
"Christine Ohurougu knows herself she is moving forward. She is very level headed and will just stay calm and work towords Beijing."
Women's 400m
Christine Ohurougu, who finished fourth, talking to BBC Sport: "I will take that. I am happy after last week so I won't complain. Last time I won here, but that is OK.
"I have had a few challenges this year but I just work for it. I seem to put myself under pressure but happy I turned out and did the job I did."
Women's 400m
Two other Britons were in the race.
Anyika Onurora, who beat Ohuruogu to the British title in Birmingham, could not get close to the personal best of 51.26 that she set in Lausanne on 9 July, finishing eighth in 51.51 after a fast start.
Seren Bundy-Davies will be happiest of all the Brits, clocking a new personal best of 51.48.
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Steve Cram
BBC athletics commentator
"Christine Ohuruogu did make progress in the home straight but the jigsaw is still missing a few pieces. It is moving forward but she still has a another few weeks. She will be a little bit disappointed."
Women's 400m
Natasha Hastings wins in 50.25
Natasha Hastings of the United States matches her season's best time with a commanding run, beating home compatriot Francena McCorory.
Christine Ohuruogu was down in fourth, running 51:00.
Women's 800m
Right, down to matters in 2015.
First up is the women's 400m.
Local girl Christine Ohuruogu, a gold-medallist at Beijing 2008, a silver medallist at London 2012, registers the biggest cheers.
Last week she finally kicked off her 2015 season in Monaco, clocking her fastest time (50.82) since winning World Championship gold in 2013.
America's Francena McCorory and Jamaican pair Stephenie Ann McPherson and Christine Day will provide stiff competition.
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'Super Saturday' was a memorable one for Britain and especially Mo Farah as he secured gold in the 10,000m.
BBC One commentators Denise Lewis, Colin Jackson, Michael Johnson and John Inverdale could hardly contain their excitement.
Watch the clip in all its glory here.
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Denise Lewis
Olympic heptathlon gold medallist on BBC TV
"Jessica Ennis-Hill is going to need strong indicators whether she is going to be on the plane with Team GB to Brazil next year. The conditions aren't great but she is experienced enough to know hw competitive she is."
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Steve Cram
BBC athletics commentator
"I met him today and Mo Farah is happy and relaxed, he is really looking forward to running this evening. Mo is reliving nice memories and we will see him run fast and win. He WILL win unless he trips up and falls over. The crowd will love it and Mo will go back to altitude training, waiting to run in Beijing."
Key times
We are fully aware of where this is happening.
But who and when? Here are the key times.
19:15 BST - women's 400m - Ohuruogu
20:17 BST - men's 100m heats - Bolt, Ujah, Dasaolu, Kilty, Aikines-Aryeetey
20:41 BST - women's 100m hurdles - Ennis-Hill, Harper-Nelson, Porter
21:29 BST - men's 100m final
21:43 BST - men's 3,000m - Farah
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Aimee Lewis
BBC Sport at Queen Elizabeth Olympic Park
Usain Bolt's fans are loyal. Rain? Pah. Wind? It doesn't matter. Jacqui Graham (on the left) and her aunt Marvela Laing are here with their family and even the rain, bouncing into the face rain, won't stop them seeing the fastest man in history in action.
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And bang on cue, here is Gabby Logan on BBC Three sheltering beneath a brolly as the pitter-patter of rain-drops are picked up on her microphone.
You can watch on the live coverage tab on this very page.
You've just missed a goose-bump fest of a montage...
It's raining
Aimee Lewis
BBC Sport at Queen Elizabeth Olympic Park
"Only one man would enjoy performing in this sort of weather and, alas, Gene Kelly has long since left us. Every event might turn into a steeplechase if the rain-filled clouds continue to spectacularly dump their load over east London. Even the capital's ducks have gone into hiding.
"Usain Bolt, though, has run well in the rain before - winning his 100m world title on a thundery night in Moscow. The Olympic champ was in better form back then, of course."
Get involved
via #bbcathletics or 81111 on text
But don't let current affairs ruin the warm afterglow from three years ago. Let's bask a little longer.
We are after your personal stories of watching the London 2012 Olympics tonight.
One of my colleagues has revealed he was hanging out of a tree to get a viewing angle on a big screen for Mo Farah's 10,000m win on Super Saturday.
That sort of thing.
Hit us on #bbcathletics on Twitter, BBC Sport on Facebook and 81111 on text from UK phones.
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Steve Backley
Four-time European champion & BBC Sport expert
"Bolt has to run quickly to give himself the belief. He doesn't lack confidence but he needs to know he's close to running 9.7 seconds. He has to run under 10 seconds tonight. He's being scrutinised by the athletics world."
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As much as this event encourages happy nostalgia, the mood around athletics is not nearly as giddy as it was in high summer two years ago.
Mo Farah is competing in Britain for the first time since drug allegations surrounding his coach Alberto Salazar surfaced.
Usain Bolt has been struggling for form and fitness this season - clocking a modest 10.12 in his one go over 100m this season and struggling with a pelvic twinge the rest of the time.
And the spectre of Justin Gatlin - twice convicted of doping but back on the track and tearing up trees as a 33-year-old - hangs over the sport ahead of the world championships in Beijing next month.
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Bolt back in town
So, we come to the first of three nights of the second Anniversary Games.
And as well as messrs Farah, Ennis and Rutherford re-tracing their steps to Olympic glory, we have athletics' high chief himself - Usain Bolt - to keep the party jumping.
Three of the 28-year-old Jamaican's six Olympic gold medals came at London 2012. He has eight world titles to keep them company back in his own personal Fort Knox. Extraordinary numbers from an extraordinary man.
He takes on the the best of British in the likes of Chijindu Ujah, James Dasaolu and Richard Kilty in the 100ms with heats at 20:17 BST and the final at 21:29 BST.
Golden years
2012. What a summer it was to be alive.
When Team GB found a timely midas touch and one corner of east London really was paved with gold.
Mo? Jess? Greg? Any time you want to reform the band to rock the Olympic Stadium once more is just fine by me.