14, 2007. Chagaev defeated Valuev by a majority decision (117-111, 115-113 and 114-114). Post-championship career On September 29, 2007, Valuev won against Jean-Francois Bergeron in Oldenburg , Germany , by a 12-round unanimous decision (118-111, 118-111 and 118-111). [7] On February 16, 2008, Valuev defeated Sergei Liakhovich by unanimous decision. [8]