Athletics: Jamaica broke the world record to win gold in the men's 4x100 metres relay as the World Championships came to an end in dramatic fashion in Daegu. Usain Bolt anchored the quartet, which also included Michael Frater, Yohan Blake and Nesta Carter, to a comprehensive victory in 37.04 seconds.
The time beat their own mark set at the Beijing Olympics in 2008, when the currently injured Asafa Powell was also in the line up, by 0.06s.
France took silver and St Kitts and Nevis a surprise bronze after the American and British teams failed to finish.
Running the third leg, Darvis Patton appeared to collide with Britain's anchor man Harry Aikines-Aryeetey, the American crashing to the track and Aikines-Aryeetey failing to receive the baton from Marlon Devonish.
"For me it was just to go out there fast," said Bolt. "We did just that and I am proud of my team. I am happy with myself. I enjoyed being the anchor. I had a little problem with my Achilles. I can't run the bend so it was decided I would run the anchor and Yohan Blake ran a great bend."
The USAwon the women's race although Carmelita Jeter had to hold off a strong finish from Jamaica's Veronica Campbell-Brown.
The American quartet of Allyson Felix, Bianca Knight, Marshevet Myers and Jeter clocked a time of 41.56 while Jamaica's time was 41.70, with Ukraine taking bronze in 42.51.
Great Britain's women had earlier failed to make the final, as they finished fifth in their heat.
South Africa's Caster Semenyawas unable to retain her title in the 800m as Mariya Savinova claimed gold in a thrilling final.
The 20-year-old had moved smoothly through the field to lead around the final bend but was overhauled just 10m from the line as the Russian produced a flying finish to win in a personal best of one minute 55.87 seconds.
Savinova's time was also the fastest in the world this year and just 0.42s slower than Semenya ran to win in Berlin two years ago before her triumph was marred by a gender row.
Semenya clocked a season's best of 1:56.35 while Janeth Jepkosgei Busienei of Kenya held off America's Alysia Johnson Montano to take bronze in 1:57.42.
Semenya said: "Even though I got a silver I really enjoyed it, better than two years ago. I know I won gold in Berlin but I am feeling much better because I didn't expect to win a medal."
Tatyana Lysenkoproduced a season's best throw of 77.13m to claim victory in the women's hammer final.
The Russian's winning effort came in the third round although her previous two attempts would also have been enough for gold.
Germany's Betty Heidlertook the silver with a best of 76.06m while a throw of 75.03m was enough for Wenxiu Zhang of China to win bronze.
Defending champion Anita Wlodarczyk of Poland finished down in fifth after only managing 73.56m although this was a season's best.
Kenya's Abel Kiruiretained his marathon title with a convincing victory on Sunday morning.
Kirui broke clear after 17 miles and crossed the line in two hours, seven minutes and 38 seconds, almost two and a half minutes ahead of team-mate Vincent Kipruto (2hrs 10mins 6secs) - the largest winning margin in championship history.
Ethiopia's Feyisa Lilesa took bronze a further 26secs back.
Kirui's time was also the second-fastest in championship history, behind his own in Berlin two years ago.
Britain's Dave Webb (2:15.48) and Lee Merrien (2:16.59) were a creditable 15th and 22nd respectively.
Webb's top 20 finish counts as an Olympic Games A standard and afterwards he said: "Finishing top 20 here counts as an A standard for the Olympics, so it would be great if that proves to be enough to get selected, it certainly would be a dream come true."