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 champion World Boxing Foundation are disregarded. If a fighter wins all the titles but is stripped by one organization of its title, he may continue to be considered the undisputed champion. Roy Jones Jr. was spuriously promoted as the undisputed light heavyweight champion by HBO after unifying the WBA, WBC and IBF titles in June 1999, for which he was also awarded The Ring championship title in 2002. However, two of those belts (WBA and IBF) had been stripped from Dariusz Michalczewski, who had unified them with his WBO title by beating the Lineal champion Virgil Hill in June 1997, and