Get involvedpublished at 19:18 British Summer Time 13 August 2014
Gregory P:, external Are my maths right and British athletes have won the last five races on the track?
James Dasaolu wins 100m gold; Aikines-Aryeetey beats Chambers to bronze
Mo Farah wins 10,000m gold and Andy Vernon takes silver
Tiffany Porter wins 100m hurdles gold
GB's Ashleigh Nelson wins 100m bronze; Dafne Schippers gold
Catch-up on the best moments in the highlights section
Mike Henson
Gregory P:, external Are my maths right and British athletes have won the last five races on the track?
Denise Lewis
Olympic heptathlon gold medallist and BBC Sport athletics expert
"Of course we'd love him to win. I just think that his interviews have been a bit downbeat of late, and a victory here would give him that little bit of confidence he seems to be lacking."
We asked you to vote on whether Mo Farah would win 10,000m gold and a whopping 78% of you said "yes". That means 22% of you doubt the great man's chances...
He is up next, following the third and final men's 100m semi-final.
Colin Jackson
Two-time world 110m hurdles champion and BBC Sport athletics expert
"James Dasaolu put his foot down and pulled away from the field without them really noticing. He maintained his form well, he's in good shape and that was a comfortable 10.04."
James Dasaolu registered the slowest reaction time out of the blocks as well. If he nails the B of the bang he might just be unbeatable in the final.
Slap! That is a gauntlet laid down with relish. James Dasaolu was feathering the brakes in the final 10m and still clocked 10.04. Christophe Lemaitre was in second, but by a clear margin.
Harry Aikines-Aryeety on BBC Two: "I know I've got some good top end speed, and it was all about making sure I made it to the final. With all the delays you've got to deal with what's thrown at you. I warmed up two hours ago and maybe got a little stale before the race, so it's great to get through."
The second semi-final looks a tastier affair than the first. Four men with sub-10 second PBs including Great Britain's James Dasaolu and French defending champion Christophe Lemaitre.
Colin Jackson
Two-time world 110m hurdles champion and BBC Sport athletics expert
"Harry Aikines-Aryeety handled this field quite comfortably and he was cruising at the end. If he really wants a medal he must start better than that, but in the circumstances it was a good performance and he took control of the race at 60m. At that point he knew he had the race in the bag, but he had to claw his way through the field after that start."
It is Romania's Catalin Cimpeanu who takes second behind Aikines-Aryeety with Nascimento and Reus in third and fourth and waiting on a fastest loser ticket to tonight's final.
Aikines-Aryeetey stops the clock at 10.21 and that looked fairly comfortable for the flying breeze block once he got into his stride.
Time for the big boys. And they don't come much bigger than Harry Aikines-Aryeety. The Briton's 100m semi-final is missing France's Jimmy Vicaut after the favourite withdrew earlier today through injury.
HA-A's main rivals are likely to be Julian Reus of Germany and Yazaldes Nascimento of Portugal for two automatic spots in tonight's final.
Matt Hudson-Smith on BBC Two after winning his semi-final: "I got out this time which I'm actually quite proud of, because I was a bit nervous. This is all new to me, a real experience and I'm learning from it.
"I've done exactly what I want to do so far. To get three of us in the final is great. A British one-two-three would be the dream but it's one step at a time."
It turns out that Matt Hudson-Smith's chest poke can make up metres. The Briton actually managed to nick that second semi-final ahead of Jonathan Borlee.
Three British winners in the semi-finals then. It will be civil war in the final at 17:50 BST on Friday.
Martyn Rooney on BBC Two after winning his semi-final: "I knew that if I did the same as yesterday it'd be enough. I reacted to the challenge from the other athletes so I'm happy.
"For me, the Europeans are bigger than the Commonwealths on a global scene for this event and I hope I can have a good day's rest tomorrow and come back and do a better job."
Matt Hudson-Smith, as in Glasgow a few days ago, does just enough, poking his chest out to make sure of second behind Belgium's Jonathan Borlee.
Matt Hudson-Smith has been solid and steady around the first 200m...
Two out of three ain't bad sang Meatloaf.
I'm not sure were the big-boned soft rock totem stands on three out of three.
That is what Team GB are going for now. Great Britain's Matt Hudson-Smith, who anchored England to 4x400m relay gold at the Commonwealth Games, is going in the third and final semi-final.
Steve Cram
BBC athletics commentator
"That looked really good from Martyn Rooney. They came by him but he didn't panic because he knows he's good in the home straight. A very good performance. Some of the big threats have gone out as well so that's an added bonus for the British athletes.
"Now all of a sudden he's in with a chance of a medal and the pressure will build."
A stroll in the park for Martyn Rooney who comes off the final bend still loose and lithe and finishes a clear couple of metres clear of the rest in 45.40. Samuel Garcia of Spain takes second and the times in that semi-final mean that 2010 champion Kevin Borlee's hopes of regaining his title are toast.