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
World Boxing Super Series commemorative Diamond title. Additionally, the winners will receive the Muhammad Ali Trophy. Due to the 'bracket style' nature of the tournament, the winner of each tournament will claim all world titles in the field. Oleksandr Usyk, the winner of the cruiserweight tournament, unified the WBO, IBF, WBC and WBA cruiserweight titles and became the first cruiserweight undisputed champion in over a decade, and the first in the four-belt era. Current broadcasters Source: World Boxing Super Series The World Boxing Super Series (WBSS) is a professional boxing tournament organised by Comosa AG. Each weight class features eight boxers competing in an