The positive tests that nabbed top-name sprinters Tyson Gay, Asafa Powell and Sherone Simpson are disappointing but also proof that global drug-testing efforts are working, the IOC and IAAF said yesterday.
The cases, which were disclosed Sunday, come less than a month before the World Championships in Moscow and cast another drug shadow over what is considered the marquee sport of the Olympics.
"I am naturally disappointed, and I would like to reiterate our zero-tolerance policy against doping," IOC President Jacques Rogge said in a statement to The Associated Press.
Gay, the American-record holder in the 100 and the fastest man at the distance this year, said he tested positive for a banned substance in an out-of-competition doping control on May 16. He hasn't identified the substance and is awaiting the testing of his backup "B'' sample.
Powell, the former world-record holder in the 100 and second-fastest man this year, tested positive for the stimulant oxilofrine at Jamaica's national championships last month. Jamaican teammate Simpson, a three-time Olympic medalist, tested positive for the same stimulant.