Mike Tyson vs. Brian Nielsen Originally, Tyson was rewarded with a technical knockout victory, but it was later changed to a no-contest in January 2001 after a post-fight drug test revealed that Tyson had tested positive for marijuana. Just days before Tyson's positive test became known to the public, he was also issued a three-month suspension by the State of Michigan, which the Nevada Athletic Commission agreed to uphold, though the suspension had little effect on Tyson's boxing schedule as he had already announced his intentions to take those three months off. After serving the suspension, Tyson's next fight was initially going to be against
Mike Tyson vs. Tony Tucker Mike Tyson vs. Tony Tucker Mike Tyson vs. Tony Tucker, billed as "The Ultimate", was a professional boxing match contested on August 1, 1987 for the WBA, WBC and IBF Heavyweight championships. HBO had organized the heavyweight unification series, a tournament intended to find the next Undisputed Champion. Mike Tyson was able to defeat Trevor Berbick and James Smith to capture the WBC and WBA Heavyweight titles during the series. Meanwhile, Tucker was scheduled to challenge Michael Spinks for the IBF title with the winner to meet Tyson for right to become the Undisputed Champion. Spinks, however, withdrew from his