US sprinter and the world's second fastest man, Tyson Gay, has tested positive for banned substances and has pulled out of next month's World Championships in Moscow.
Gay didn't reveal the substance in a phone conversation from Amsterdam on Sunday but said:
"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. I don't have any of those stories. I basically put my trust in someone and I was let down."Tyson is now awaiting the result of of his 'B' sample.