Source:BBC NewsFormer world champion Tyson Gay and Jamaica's ex-100m world record holder Asafa Powell have failed drug tests.
American Gay, 30, the joint-second fastest man ever over 100m, was told by the US Anti-Doping Agency on Friday that his A sample from an out-of-competition test in May was positive.
Powell, the all-time fourth quickest, tested positive for a banned stimulant at June's Jamaican Championships.
The 30-year-old Powell was the last man to hold the individual 100m record before compatriot Usain Bolt broke it in 2008.
Powell later helped Jamaica to win 400m relay gold at the 2008 Olympics in Beijing.
What a shame. Little do they know that their conduct can end up tainting an entire sport. Gay is the all-time second and Powell the fourth fastest 100m athletes in history!
Cricket still hasn't been able to shrug off Asif and Aamer's spot fixing scandal. Same goes for the cyclist Armstrong's drug revelation.
Who knows how many sportsmen must be taking performance-enhancing drugs and keep getting away from it? Can Sports ever completely rid itself of this bane?