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
USA Boxing Union) Boxing championships. The Championships crown a United States Amateur Champion in each of the sanctioned weight classes. USA Boxing organizes the USA Knockouts team in the World Series of Boxing. Weight Classes - Elite Men Weight Classes - Elite Women Below are the lists of the national amateur champions, by division: USA Boxing USA Boxing is the national governing body for Olympic-style amateur boxing. It is overseen by the United States Olympic Committee and the International Boxing Association (AIBA), which sets its rules. Headquartered in Colorado Springs, CO, USA Boxing is a non-profit organization responsible for the administration, development