As Olympic champion Usain Bolt prepares for the world championships, he finds himself immersed in the conversation that has dominated track and field this past year: the issue of doping.
And Bolt insists he can't be the only symbol for clean racing.
"I can't do it by myself," he said Thursday, per ESPN.com. "People say I need to win for the sport. But there are a lot of other athletes who are running clean, and they've been running clean their whole career. It's not just on me but on all the athletes."
He was also disappointed that the conversation of doping has become the dominant topic surrounding his sport: "All I've been hearing about the past couple weeks is doping, doping, doping.