Mike Tyson vs. Larry Holmes, billed as Heavyweight History, was a professional boxing match contested on January 22, 1988, for the WBA, WBC and IBF Heavyweight Championships.

Mike Tyson vs. Tyrell Biggs, billed as The Clash for the Crown, was a professional boxing match contested on October 16, 1987, for the undisputed heavyweight championship, which consists of the WBA, WBC and IBF heavyweight titles.