I've watched a propa documentary on him and when it comes to some of the fights he lost. He lost down to not training, being fucked up the hole week before a fight and just not believing he could win. He was fighting so he didn't let the crowd down. There was this one fight, where he didn't train, he had loads of sex, and took loads of drugs. He went into the fight being a total wreck and lost. In his peak he was truly deadly.