Undisputed champion recognised a different champion. The disputes were usually short-lived as a lucrative fight would be organised between the rival champions. The longest split was ten years, of the middleweight title, between Mickey Walker's move up to heavyweight in 1931 and NBA champion Tony Zale's defeat of NYSAC contender Georgie Abrams in 1941. An early use of "undisputed" appears in a "New York Times" preview of the 1941 fight. The growing popularity of boxing outside of the USA led to creation of various boxing organizations, each strengthening their influence (most notably BBBofC) and having their own champion. This resulted in a
George Foreman's KO Boxing differ greatly from the other releases and were based on the Master System version of "James Buster Douglas Knockout Boxing". In the 16-bit and Nintendo 8-bit versions, the player assumes the role of George Foreman, who, at 43 years old, is pursuing a quest to become the undisputed heavyweight champion of the world by uniting the title belts of three fictional boxing circuits. Gameplay is very similar to "Punch-Out!!": players are given the option to block the opponent's attempted punches, evade in two different directions, and throwing a wide variety of punches. Victory in a match can be won by