Gay tests positive for banned substance

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 on Sunday, but he said he was notified by the U.S. Anti-Doping Agency late 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.

"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. 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."

A triple world champion in 2007, Gay was healthy again this season after being constantly plagued by hamstring and groin ailments, along with a surgically repaired hip. He won the 100 and 200 at nationals last month, setting up an anticipated showdown with Usain Bolt at worlds.

But that's been scrubbed. Gay also said he will pull out of a meet in Monaco and fly back to the headquarters of USADA in Colorado Springs, Colo., to be on hand when his "B" sample is tested.

He's spoken with his teammates, friends and family, including his mother and daughter.

"They already know it is some type of accident, or some type of -- I don't want to use certain words, to make it seem like an accident, because I know exactly what went on, but I can't discuss it right now," he said. "My career and my name have always been better than medals or records or anything like that. I've always wanted a clean name with anything. Unfortunately, I have to break this news, that I have a positive 'A' sample."

Gay wouldn't go into specifics about the case, saying he couldn't "discuss it" when asked if what he tested positive for was a steroid.

"I have to go over everything with USADA first," said Gay, who finished fourth at the London Games last summer. "I will take whatever punishment I get like a man. I do realize and respect what I put in my body and it is my responsibility.

"I'm going to be honest with USADA, about everything, everybody I've been with, every supplement I've ever taken, every company I've ever dealt with, everything."

Former 100-meter world-record holder Asafa Powell and Jamaican teammate Sherone Simpson also have each tested positive for banned stimulants, according to their agent.

Paul Doyle told The Associated Press on Sunday that they tested positive for the stimulant oxilofrine at the Jamaican championships and were just recently notified.