World Boxing Super Series boxing tournament attempt since the Super Six World Boxing Classic, which took place from 2009 to 2011. The first season of tournament was held from 2017 to 2018 at two weight classes: cruiserweight and super middleweight. The inaugural tournament started in September 2017 and finished with two finals in the summer of 2018. With the tournament, the cruiserweight division crowned its first undisputed champion since 2006. At a press conference in London on 9 May 2018, a second season was announced, which would take place from 2018 to 2019. Bantamweight and light welterweight was confirmed as two of the three
Undisputed championship to become the first undisputed World Heavyweight Champion. The only other reigning champion with claim to the belt at the time was Tom Jenkins the American Heavyweight Championship, which unified the American Greco-Roman Championship with the American Catch-As-Catch Can Championship. Jenkins was eventually defeated by Frank Gotch, who took over as the only man with a potentially legitimate claim to being "the true champion". Hackenschmidt and Gotch finally met in the ring on April 3, 1908 in Chicago, Illinois. Gotch defeated Hackenschmidt to win the World Heavyweight Championship, then abandoned the American Heavyweight Championship in a process similar to today's