American Michelle Perry retained her world title in the women's 100 metres hurdles with a powerful late surge at the world championships in Osaka on Wednesday.
Perry, who won gold at the last world championships in Helsinki two years ago, finished strongest in a tight final to clock a winning time of 12.46 seconds.
Canada's Perdita Felicien, the 2003 world champion, took silver in 12.49 with Jamaican Delloreen Ennis-London sneaking the bronze medal in 12.50.
Sweden's European champion Susanna Kallur burst quickly from the blocks but faded over the last two hurdles to finish out of the medals in fourth in 12.51.