World Athletics Championships day four: Rutherford, Bolt, Rudisha

Summary

Greg Rutherford wins long jump gold (8.41m)
David Rudisha wins 800m gold in 1:45.84
Genzebe Dibaba wins 1500m final
Christine Ohuruogu wins her 400m semi
Bolt and Gatlin win their 200m heats

Live Reporting

Aimee Lewis

Get involved #bbcathleticspublished at 13:53 British Summer Time 25 August 2015
Annabel Crossman: Superb jump Greg, you are smashing it!
Sukhvinder Pabial: 8.41m on his fourth jump! Great jump from @GregJRutherford, external! Sure to secure a gold with that one!
Joseph Howarth: Something tells me @GregJRutherford, external was happy with that! What a jump!
Gold for Rudisha?published at 13:52
It was one of the iconic images of London 2012 - David Rudisha taking on the best in the world and breaking the world record to win Olympic gold.
The Kenyan has not been quite the same athlete since that memorable London night, mainly because of injuries, but he was impressive in his semi-final.
Significantly perhaps, the Kenyan's main rival Nijel Amos, the Commonwealth champion, failed to qualify for the final.
The men's 800m final will get under way at 13:55 BST.
Image source, Getty Images
'A laugh and a joke key to Rutherford success'published at 13:51 British Summer Time 25 August 2015
Allison Curbishley
BBC athletics expert on Radio 5 live
Quote Message
"We used to hold our breath with Greg Rutherford because of his injuries, but he's put those behind him now. He's so relaxed, he's laughing and joking out there and that is clearly the key to his success."
Image source, EPA
Flukey Greg?published at 13:51 British Summer Time 25 August 2015
Challenge on...published at 13:51 British Summer Time 25 August 2015
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"Greg has invited me to come and jump in his sand pit in his back garden next year. I'm going to come out of retirement!"
Four-time long jump world champion Dwight Phillips on Radio 5 live
Rutherford skips fifth jumppublished at 13:51
Greg Rutherford, after recording a season's best and the second best leap of his career, decides to pass on his fifth attempt, conserving the energy for the sixth jump.
Australia's Fabrice Lapierre is his closest challenger with a 8.20m jump. It feels like history is making a place for Rutherford.
Brit Muir fifth in 1500mpublished at 13:44
Britain's Laura Muir finishes fifth in the 1500m in 4:11.48. Paula Radcliffe says the Scot can leave Beijing with her "head held high".
Image source, Getty Images
'Hassan lacked belief'published at 13:42 British Summer Time 25 August 2015
Paula Radcliffe
Women's marathon world record holder on BBC TV
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Hassan should have been closer to Dibaba right from the beginning. I just think she lacked the belief that she could challenge Dibaba
Dibaba wins 1500m goldpublished at 13:39
Genzebe Dibaba trusted herself, took control with 500m to go. Sifan Hassan, the European champion, attempts to chase the world record holder... at one point we looked set for a battle royal but on the home straight Dibaba extended her lead and victory was never in doubt.
Image source, Reuters
Dibaba in the leadpublished at 13:39
In the women's 1500m Genzebe Dibaba is out in front as the final bell tolls. The Ethiopian setting the pace. Britain's Laura Muir way behind.
Rutherford jumps 8.41mpublished at 13:36
What I'm about to type is the truth, the whole truth and nothing but the truth: Greg Rutherford has just leapt a mighty 8.41m to extend his lead in the long jump.
Women's 1500m finalpublished at 13:36
What a field there is in the women's 1500m final. Can Genzebe Dibaba, the world record holder, win gold? We'll soon find out. The women have just set off.
Image source, Getty Images
Men's long jumppublished at 13:34
Decibels rise inside the Bird's Nest, the crowd think they've seen their man, Xinglong Gao, soar over Greg Rutherford's mark. But the man in charge of the red flag dims what was set to be one heck of a roar. The fast track causing problems for many of the long jumpers.
A first for Bett and Kenyapublished at 13:32
Last year Nichoals Bett failed to make the Commonwealth Games final, but 12 months on he's world champion.
'Tinsley paid the penalty'published at 13:31 British Summer Time 25 August 2015
Colin Jackson
Two-time world 110m hurdles champion on BBC TV
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Nice to see people from different parts of the world win events you don't expect them to win. Michael Tinsley went off very hard and paid the penalty.
Kenya's Nicholas Bett wins 400m hurdles goldpublished at 13:27
America's Michael Tinsley is one of four in the mix coming into the final bend but he hits a barrier and fades away.
Coming through in the last 30m from lane nine is Nicholas Bett and the Kenyan overtakes Russia's Denis Kudryavtsev, who was the fastest in the field this year, and does so in a world leading 47.79.
Bronze goes to Jeffery Gibzon (48.17) of the Bahamas.
Jeffery GIBSON, external
Postpublished at 13:25 British Summer Time 25 August 2015
Greene with envypublished at 13:25 British Summer Time 25 August 2015
Dai Greene
2011 world 400m hurdles champion, BBC Sport
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Me at my best, I'd be up there with the rest. I'd love to be over there and be part of the competition.
Image source, Getty Images
The men's 400m hurdles final is at 13:25 BST. Which is now, really.
Jackson on the men's 400m hurdles finalpublished at 13:35
Colin Jackson
Two-time world 110m hurdles champion
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The new brigade have made it quite exciting, especially the two new Kenyans. Their camp told me those athletes have not spent much time hurdling. I think they've done quite well.
Kenya's Nicholas Bett and Boniface Mucheru go in the 400m hurdles final at 13:25 BST.
Greene previews 400m hurdles finalpublished at 13:24 British Summer Time 25 August 2015
Dai Greene
2011 world 400m hurdles champion on BBC TV
It's very open. United States athlete Michael Tinsley has a great lane draw and has bags of experience.
Image source, Getty Images