In Rio, American sprinter Justin Gatlin remains a villain to some given his history of doping offenses, albeit from several years ago.
The world's fastest man will be sprinting in Rio this August.
The six-time Olympic champion pulled out of the final after suffering a 'Grade 1 tear.'
Jamaican sprinter says he wants to go out like Ali, Pele.
Only a bolt of a different sort tops Olympic champion's 9.77-second performance.
Sprinter speaks for first time since Jamaican teammates failed drug tests.