We r talking about profesional boxers resumé and you start bringing amateur failed test? Vit was perscribed a drug to heal his injury and it was not legal he got punished very hard for it as he was denied Olimpic entrie and thus was in lil brothers shadow in begining of his career until Sanders fight. Also he trained together with Wlad and they never before or after that one incedent tested positive so his excuse that he did not check healing substance is believable. Are Roy Jones, Toney, Mosley proven drug cheats? They did test positive.