Undisputed champion he was still described as "undisputed champion" by some reports. After Joe Calzaghe's super middleweight victory over Mikkel Kessler in November 2007, he was frequently described as "undisputed champion". Others disputed this, because although he held the WBA, WBC, and WBO belts, he vacated his IBF title in November 2006 rather than face a mandatory challenger, and immediately vacated other titles as well. The unified champion is defined as a boxer that holds at least two world championships of major sanctioning bodies (WBA, WBC, WBO or IBF) in their respective division. Around 2004, the World Boxing Association recognized three different
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