World's No. 5 sprinter banned for steroids, By: James Christie

Aziz Zakari of Ghana faces the tough prospect of a comeback for the 2008 Olympics, after testing positive for the steroid stanozolol at the Grand Prix in Dakar, Senegal. Zakari, 29, is fifth in international 100-metre rankings. He has twice broken the 10-second barrier and professed to be chasing down co-holders of the record, Asafa Powell of Jamaica and Justin Gatlin of the United States.