American Dwight Phillips retained his world long jump title, leaping 8.45 metres to repel the challenge of Australian Mitch Watt and claim his fourth world championship gold.
The 33-year-old has had a poor season and qualified for Deagu on the back of his gold medal triumph in Berlin two years ago.
But he found his form when he needed it to claim another world title after earlier successes in 2003 and 2005.
Watt, 23, took silver to add to the bronze he won in Berlin two years ago just 18 months after taking up the event.
Ngonidzashe Makusha took the bronze with his opening leap of 8.29 to win bronze and Zimbabawe's first world championship medal.