Nikolai Valuev 7 November 2009, billed as "'David vs. Goliath"', Valuev faced off against former unified and lineal cruiserweight champion David Haye (22-1, 21 KOs) at the Arena Nürnberger Versicherung in Nuremberg. Valuev lost on points (114–114, 116–112, 116–112). Valuev announced his retirement from boxing in a Russian newspaper three days after the loss to Haye on 10 November 2009. In 2010, Valuev's doctor went on record saying that he is treating Valuev for "serious bone and joint problems". Valuev underwent two operations that required at least six months on the sidelines. Valuev confirmed in 2013 that medical advice was one of
Undisputed champion awarded to champions that were able to defend the WBA title 5 times), the term "undisputed" was dropped completely. Keys: Keys: Undisputed champion In professional boxing, the undisputed champion of a weight class is usually a boxer who is recognized as the world champion at that class by each boxing organization, However, there are no officially declared necessary conditions needed to become an undisputed champion, as the major boxing organizations refer to all boxers holding at least two world titles in their respective division as "unified champions". Prior to the 1960s, most champions were "undisputed", although the term was rarely