US' Ryan Bailey (C) crosses the finish line ahead of Ivory Coast's Ben Youssef Meite (L) and Canada's Justyn Warner after competing in the men's 100m heats at the athletics event of the London 2012 Olympic Games on August 4, 2012 in London. AFP PHOTO / GABRIEL BOUYS
(From L) Barbados' Ramon Gittens, Jamaica's Asafa Powell, The Netherlands' Churandy Martina and Nigeria's Obinna Metu compete in the men's 100m heats at the athletics event of the London 2012 Olympic Games on August 4, 2012 in London. AFP PHOTO / OLIVIER MORIN
Jamaica's Asafa Powell (L) competes in the men's 100m heats at the athletics event of the London 2012 Olympic Games on August 4, 2012 in London. AFP PHOTO / FRANCK FIFE