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 being unable to grant Valuev a rematch in 2009, the WBA stripped Chagaev of the title. He went on to suffer his first professional loss in the same year to unified heavyweight champion Wladimir Klitschko. Chagaev won the WBA (Regular) heavyweight title for a second time by defeating Fres Oquendo in 2014. He made one successful defence, but lost the title to Lucas Browne in 2016. However, after Browne failed a drug test, the WBA reinstated Chagaev as champion, but he was once again stripped of the title in July after failing to pay sanctioning fees. On 28 July 2016