American 100-meter record holder Tyson Gay tested positive for a banned substance and said he will pull out of the world championships next month in Moscow. Gay wouldn't reveal the substance in a phone conversation from Amsterdam today, but he said he was notified by the US Anti-Doping Agency last week that a sample came back positive from a May 16 out-of-competition test. He said he will have his "B" sample tested soon, possibly as early as this week, and will then accept any punishment he receives.
"I don't have a sabotage story. I don't have any lies. I don't have anything to say to make this seem like it was a mistake or it was on USADA's hands, someone playing games," said Gay, who fought back sobs as he spoke. "I don't have any of those stories." But he does have an excuse of some sort: "I basically put my trust in someone and I was let down." Asked who that person was, Gay replied: "I can't really say it. Sometimes a human being naturally, generally trusts somebody. That's what people do." (Read more Tyson Gay stories.)