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. Brian Nielsen Mike Tyson vs. Brian Nielsen Mike Tyson vs. Brian Nielsen was a professional boxing match contested on October 13, 2001. Since returning to boxing in January 1999, former Undisputed Heavyweight Champion Mike Tyson was undefeated in the five fights he had fought between 1999 and 2000, notching three knockout wins over Francois Botha, Julius Francis and Lou Savarese, and fighting two no-contests with Orlin Norris and Andrew Golota. Tyson's previous fight had come against Golota almost a year earlier on October 20, 2000. Tyson dominated Golota for two rounds before Golota decided to quit between the second and third rounds.