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
Undisputed champion officially became the World Boxing Association and moved their headquarters to Panama City, Panama. A year later NYSAC along with European Boxing Union and BBBofC supported creation of the World Boxing Council. WBC was officially established on February 14, 1963, in Mexico City, Mexico by 11 countries (the United States, Puerto Rico, Argentina, United Kingdom, France, Mexico, Philippines, Panama, Chile, Peru, Venezuela and Brazil) that were invited by the President of Mexico Adolfo López Mateos to form an international organization to unify all commissions of the world to control the expansion of boxing. The reason for the move were concerns