Mosley did take a banned substance before the 2nd DeLaHoya fight and addmitted it during the testemony a couple years ago, But he was told it was legal performance enhancers with no banned substances by his stregnth coach. He took a lie detector test and passed. That should have been the end of it. Mosley has even said that they could have even potentally cost him the fight cause they screwed up his performance. The guy is sincere and should be left alone.