He was a pro heavyweight boxer from 1977 to 1990, following an amateur career in which he posted an amazing won-lost record of 55-3. As a pro, he was 28-3, with 24 of those victories coming by knockout. He rose to a number one ranking by the WBC and in Madison Square Garden in 1981 defeated former world heavyweight champion Ken Norton by a knockout just 54 seconds into the first round. According to the legendary George Foreman, he was one of the three hardest punchers Foreman had faced in his career, which is proven by him being ranked on "The Ring's" list of "100 Greatest Punchers of All Time." Unfortunately, there was a curveball thrown into all this, though, as evidenced by the book he co-authored, which is talked about here. He founded F.I.S.T. -- the Fighters' Initiative for Support and Training, an organization which helps retired boxers find jobs. He is an inductee of multiple Halls of Fame and has a show on SiriusXM Radio.