 His 100 m personal best of 9.96 seconds makes him the fifth fastest Jamaican sprinter in the event, after Usain Bolt, Asafa Powell, Nesta Carter and Yohan Blake.He went on to coach a number of prominent sprinters, including Jerome Young, but received a life-ban from athletics in 2010 as he had allegedly obtained performance-enhancing drugs for his athletes.Stewart attended Camperdown High School, and was coached by Glen Mills.