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.

The heavyweight unification series, also known as the Heavyweight World Series, was a sequence of professional boxing matches held in 1986 and 1987 to crown an undisputed champion of the heavyweight class. The series was produced by HBO Sports and promoted by Don King. It ended with Mike Tyson as undisputed champion, holding the championship belts of the International Boxing Federation (IBF), World Boxing Association (WBA), and World Boxing Council (WBC).