The world's fastest man Usain Bolt anchored Jamaica to a golden 4x100m relay world record time of 37.04 seconds in the final race of the world athletics championships in South Korea.
The quartet of Nesta Carter, Michael Frater, Yohan Blake and Bolt bettered the mark of 37.10 seconds which the Jamaican team ran to win gold at the Beijing Olympics in 2008 to retain their world title.
It was the first and only world record set at the 13th world championships.
France finished second to win the silver medal in 38.20 seconds with Saint Kitts and Nevis claiming bronze in 38.49.
The American team failed to finish after their third-leg runner Darvis Patton clipped a British athlete and fell over before attempting to pass the baton to Walter Dix.
The British quartet also failed to finish.
Mo Farah had been magnificent in clinching 5000m gold for Britain in a superb race that would have proved a fitting climax to a dramatic Daegu games, but now that accolade must go to Bolt and his compatriots.
