Asafa Powell broke the world record in the 100 meters Tuesday with a 9.77 clocking at Olympic Stadium, where the Jamaican didn't fare nearly as well during the Athens Games last summer.

China's Liu Xiang (L), 110 metres hurdles world record holder, and Jamaica's Asafa Powell, men's 100 metres world record holder, pose during a commercial event in Shanghai December 7, 2007.