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
Nikolai Valuev created the Nikolay Valuev Boxing School, with offices in St. Petersburg and the Leningrad Oblast. The school is divided into three types of age groups: pupils (school terms 3-5), students (terms 6-8) and adults. School pupils participate and compete in various boxing matches, including the "Valuev Cup" youth boxing tournament, which became a regular competition in St. Petersburg. The Valuev Youth Sports Foundation opened on 13 September 2010. The fund was established to promote regular physical exercise among young people to enable children of different social backgrounds play sports, to further their education and strengthen the principles of sport, as