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
Professional boxing the separate bodies to be the "Undisputed World Champion." Regional sanctioning bodies such as the North American Boxing Federation, the North American Boxing Council and the United States Boxing Association also awarded championships. "The Ring" Magazine also continued listing the World Champion of each weight division, and its rankings continue to be appreciated by fans. The World Professional Boxing Federation, or WPBF, which is less widely known, is ranked separately from and considered less important than the other four. Professional boxing Professional boxing, or prizefighting, is regulated, sanctioned boxing. Professional boxing bouts are fought for a purse that is divided