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. Frank Bruno WBC heavyweight championship. In the rematch Tyson would again dominate Bruno, knocking him out in the third round to become the WBC heavyweight champion. Mike Tyson vs. Frank Bruno Mike Tyson vs. Frank Bruno was a professional boxing match contested on February 25, 1989 for the WBA, WBC, IBF and lineal heavyweight championships. Tyson was coming off a 1st-round knockout over the previously undefeated Michael Spinks, which not only gave Tyson the lineal heavyweight title, but laid to rest any doubt over who was the rightful heavyweight champion. Next for Tyson was a bout against popular British fighter Frank Bruno