World's fastest man weighs in on Olympic doping scandal

PRAGUE - Usain Bolt said Wednesday the announcement of positive retesting of samples from the 2008 Beijing Olympics is "really bad news."

The Jamaican great says "for me, it's rough, it's rough in the sport. Something that's been tarnishing the sport for years."

Bolt was speaking to reporters in Prague on Wednesday, a day after the International Olympic Committee announced that 31 athletes were caught and could be barred from competing in the Rio de Janeiro Games.

Bolt still says the agencies like WADA "are doing a very good job of cleaning up the sport. They've proven that anybody who has cheated, they're going to catch."

Bolt will run the 100 meters at the Golden Spike meet in the eastern Czech city of Ostrava on Friday, his first race in Europe ahead of the Rio Games.

The world's fastest man has avoided accusations of doping during his illustrious career, largely due to his demonstrable genetic gifts. One of the few rivals to his dominance in the sport in recent years, Justin Gatlin, has been suspended twice for doping.