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
World Boxing Association titles in the same weight class as a "Super Champion", "Unified Champion", or "Undisputed Champion". This applies even if the WBA title is not one of the titles held by the "Undisputed Champion." In September 2008 for example, Nate Campbell was recognized as the WBA's "Undisputed Champion" at lightweight due to holding the WBO and IBF titles as well, while the WBA's "Regular" champion was Yusuke Kobori. If a fighter with multiple titles also holds the WBA's title, the fighter is promoted to "Super Champion" and the WBA title—which is then referred to as the "Regular" title—becomes vacant for competition