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
Andreas Sidon Andreas Sidon Andreas Sidon, (born 4 February 1963 in Wuppertal, Nordrhein-Westfalen, Germany) is a German professional boxer fighting in the heavyweight division. Sidon turned professional in March 1999 in the Buergerzentrum Chorweiler, Cologne, Nordrhein-Westfalen, Germany. In his debut Sidon stopped Zoltan Nagymihaly in the second round of a four round contest. Sidon faced Nikolay Valuev in only his second fight. Sidon suffered two standing eight-counts in the first round. Valuev also dominated the second round. The referee wanted to stop the fight in the third round, although there seemed to be no reason for a stoppage at that moment. The