Watch live coverage of day eight of World Athletics Championships in Tokyo, Japan (UK only, all times BST)
GB's Katarina Johnson-Thompson shares heptathlon bronze medal with American Taliyah Brooks
USA's Anna Hall wins heptathlon gold, silver for Ireland's Kate O'Connor
Emmanuel Wanyonyi wins thrilling men's 800m final with GB's Max Burgin sixth
Kenya also win women's 5000m gold with Beatrice Chebet
Britain's men out of 4x100m relay and women fail to qualify for 4x400m final; GB through in men's 4x400 and women's 4x100
Heptathlon
It's a shared bronze!
Katarina Johnson-Thompson is exactly level on points with United States athlete Taliyah Brooks, who was already in third position going into this final event.
KJT ran a season-best of two minutes 07.38 seconds, while Brooks came in ninth with a personal best of 2:13.17.
Heptathlon
Katarina Johnson-Thompson pushes through to second position in the 800m!
Has she put up a good enough time to move back onto the podium?
It looks like she may have just missed out, but it's very close, we await official adjudication.
Anna Hall secures the gold medal with a time of two minutes 06.08 seconds, while Ireland's Kate O'Connor is safe in silver having crossed the line in seventh.
Her time of 2:09.56 is her fifth personal best of the championships - a remarkable effort.
Heptathlon
As we go through the first lap, Katarina Johnson-Thompson is third in the 800m as she seeks a medal position.
Anna Hall sits in second behind team-mate Michelle Atherley.
Heptathlon
The athletes are being introduced out on the track.
There's a big field of 20 out there, split into two start positions.
The leaders get the start on the inside, Anna Hall and Katarina Johnson-Thompson among them.
Heptathlon
Harry Poole
BBC Sport in Tokyo
Well, it's been a session and a half so far.
There's always carnage when the relays take centre stage. Thankfully the women's 4x100m quartet have steadied the ship there for GB and kept alive their medal hopes.
Now, can Katarina Johnson-Thompson win the team's third medal of the championships?
It will be interesting to see how she approaches this.
With the second-best 800m time in the competition, around three seconds slower than Anna Hall's, Johnson-Thompson has the option of going out and trying to hang on to Hall for as long as possible - just as she did to protect her gold medal position in 2023.
This time, though, she is the one needing to make up ground.
She needs to beat Taliyah Brooks by six seconds to get bronze, aware she has run 8.5 seconds faster than the American.
Warning: This is not going to be relaxing Saturday lunchtime viewing.
Heptathlon
Here's how we stand going into the final 800m event of the heptathlon at 13:11 BST.
Anna Hall looks nailed on for gold, while Kate O'Connor is in a strong position for silver.
We make it that Britain's Katarina Johnson-Thompson needs to beat Taliyah Brooks by six seconds to get bronze. Brooks is 8.5 secs slower on PBs. KJT could just about afford to run 2:07.00 (1009 pts) if Brooks can’t better her 2:13.39 PB (916 pts).
O'Connor - who is less than six seconds off KJT's PB - would need to lose by 11 seconds to surrender silver to her.
Image source, PAWomen's shot put
American Chase Jackson has fallen just short in her pursuit of a hat-trick of world titles, as Jessica Schilder of Netherlands snatches the gold.
Schilder threw a best mark of 20.29m, just eight centimetres further than Jackson who takes silver.
Maddison-Lee Wesche of New Zealand earns bronze after a personal best throw of 20.06m, demoting Canadian Sarah Mitton - second at the last worlds - out of the medals.
Jeanette Kwakye
Former British 100m champion on BBC TV
Jeanette Kwakye on Great Britain's DNF in the men's 4x100m relay: "You can see Jona Efoloko is shouting 'hand' and essentially he is asking for Eugene Amo-Dadzie to put his hand out but you can see he's gone too soon.
"What's frustrating about that is sometimes people say it's the responsibility of the incoming runner but there are measured steps and they practise some much. Really and truly there isn't an excuse."
Women's javelin final
Image source, Getty ImagesThe Tokyo crowd would have hoped and expected to cheer on a Japanese gold in this final starting shortly - but have been left disappointed.
Olympic and world champion, and face of these championships, Haruka Kitaguchi failed to qualify after a disappointing heat off the back of a recent elbow injury.
The final looks wide open – Serbia’s two-time world under-20 champion Adriana Vilagos threw farthest in qualifying with 66.06m, ahead of Australia’s 2023 world bronze medallist Mackenzie Little.
Eugene Amo-Dadzie speaking to BBC Sport on him missing the baton resulting in a DNF for Great Britain in the men's 4x100m final:
"I put my hands up and I want to say sorry to the boys. Sport can be cruel sometimes.
"First and foremost, I'm apologising to my coach and to my boys. I didn't do my job well enough today. It's frustrating. I was feeling really good. It's a shame that we haven't got an opportunity to show what we can do. It hurts."
Jona Efoloko: "Unfortunately, these things happen as a team. We'll come back and learn."
BBC One
If you are watching on BBC TV or iPlayer, switch over to BBC One now for continued live coverage of today's events.
If you're watching on the website, don't worry, your viewing will be uninterrupted - as will our live text coverage.
Women's 4x100m relay
That's much less chaotic.
The United States take the heat in 41.60 seconds, the world's fastest time this year.
Great Britain go through in third, with Germany's Gina Luckenkemper absolutely storming down the final straight to pip Daryll Neita into second.
Canada and Poland in fourth and fifth are fast enough to qualify in the two non-automatic places.
Image source, Getty ImagesWomen's 4x100m
Here we go with heat two.
Great Britain and the United States in this one.
Dina Asher-Smith, Success Eduan, Desiree Henry and Daryll Neita are in lane seven - 200m silver medallist Amy Hunt sits out of the heats.
Melissa Jefferson-Wooden is also absent from the USA line-up for now.
Greg Rutherford
Former world and Olympic long jump champion
Greg Rutherford on Great Britain failing to qualify for the men's 4x100m relay final: "He's [Eugene Amo-Dadzie] just gone too soon. It's heartbreaking.The changeovers were beautiful from one to two and two to three.
"We were moving well then the South Africans felt impeded by the Italians and at this point we're thinking brilliant that's us in the finals and actually a great chance in the finals.
"He's just gone too soon. We put so much into the relay in this country to make sure this goes right and it's gone really, really poorly today."
Decathlon
USA's Kyle Garland has maintained his lead in the decathlon after the fourth event, the high jump.
Garland registered 2.11m, the second best overall in the field, to move on to 3833 points.
The best height in the high jump was 2.14m, registered by Sander Skotheim of Norway. Skotheim has already won world and European indoor heptathlon gold this year and he's up to second overall, 206 points behind Garland.
The fifth event, the 400m, takes place later today before the decathlon concludes tomorrow.
Image source, Getty ImagesWomen's 4x100m relay
All pretty comfortable for Jamaica.
Jonielle Smith is way in front on the final straight, crossing the line in 41.80 seconds.
Spain and France are second and third, while there's chaos further back in the field.
Italy's Vittoria Fontana pulled up with injury in the first leg and had to limp to the changeover, while Australia did not finish after issues on their opening stretch.
Women's 4x100m relay
The relay action comes thick and fast, we're into the first of two heats in the women's 4x100m.
Jamaica go in lane seven in this one.
Women’s 4x100m relay heats
Great Britain earned silver in Paris last summer, their best result at the Olympics since 1956.
The quartet in that final was Dina Asher-Smith, Imani Lansiquot, Daryll Neita and Amy Hunt - who so impressively won world 200m silver yesterday.
Bianca Williams and Desiree Henry ran in the heats and may feature here again.
2024 bronze medallists Germany go up against the Brits in heat two, while well-fancied Jamaica go in heat one.
Dame Jessica Ennis-Hill
Three-time world heptathlon champion on BBC TV
Dame Jessica Ennis-Hill on Great Britain failing to qualify for the women's 4x400m relay final: "We would expect them to qualify. We've seen the success of the team in previous years. Where did it go wrong for that Great British team?"
Image source, Getty ImagesGreg Rutherford
Former world and Olympic long jump champion
Greg Rutherford on Great Britain failing to qualify for the women's 4x400 relay final: "I'll be totally honest that's not good enough and we have to put it into perspective.
"Yes, it's tough and conditions are hard but when there's that much focus on an event you can't come last in your heat at a world championships.
"The four girls that went out there they should be able to navigate a qualification. From my point of view, it's genuinely not good enough."