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. Pinklon Thomas a unification match with Tony Tucker, who was able to capture the IBF Heavyweight Championship by defeating Buster Douglas by 10th round technical knockout prior to the Tyson–Thomas fight. The two men went the full 12 rounds, with Tyson ultimately picking up the victory by unanimous decision to become the first Undisputed Heavyweight Champion since Leon Spinks in 1978. Mike Tyson vs. Pinklon Thomas Mike Tyson vs. Pinklon Thomas, billed as "Hard Road to Glory", was a professional boxing match contested on May 30, 1987, for the WBA and WBC heavyweight championships. In 1986, the three major boxing organizations, the