Kenyan Vivian Cheruiyot retained her women's 5,000m world title on Friday to add to her gold in the 10,000 in Daegu. The 27-year-old crossed the line in 14 minutes 55.36 sec ahead of compatriot Sylvia Kibet in second place. Ethiopia's Meseret Defar, the 2007 world champion, could not hide her disappointment after taking the bronze.
Cheruiyot, who led a Kenyan sweep of the medals in the 10,000 on Saturday, struck for home at the bell with Defar tucked in behind.
The Ethiopian grimaced as Cheruiyot found another gear at the top of the home straight and was pushed down to the bronze medal position by the fast-finishing Kibet.
American Dwight Phillips reclaimed the world long jump title, leaping 8.45 metres on his second and final valid attempt to see off the challenge of Australian Mitch Watt.
LaShawn Merritt performed the 'Virginia Shuffle' before storming down the final 100 metres to overhaul his Jamaican and South African rivals and win the world 4x400 metres relay title for the United States.
German youngster David Storl emerged from the shadows to claim the men's shot put gold with his final throw. The 21-year-old's sixth throw of 21.78 metres, a personal best, enabled him to pip Canada's Dylan Armstrong.
Russia's Maria Abakumova upstaged world record holder Barbora Spotakova to win the women's javelin title with a championships record of 71.99 metres, the second-longest throw of all time.
Usain Bolt, disqualified in the 100m for a false start, made it to the 200m final.