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
Ruslan Chagaev Ruslan Chagaev Ruslan Shamilevich Chagaev (, "Ruslan Şamil ulı Çağayev"; ; ); born 19 October 1978) is an Uzbekistani former professional boxer who competed from 1997 to 2016. He is a two-time WBA heavyweight champion, having held the full world title from 2007 to 2009, and the Regular title from 2014 to 2016. Chagaev was the first Asian boxer to hold a heavyweight world title by any of the four major sanctioning bodies. In 2007 he defeated then-unbeaten Nikolai Valuev to win the WBA heavyweight title for the first time, and would make two successful defences. Due to injuries and