Two-time WBA heavyweight champion and entrepreneur who was forced to retire because of serious bone and joint problems.
He played water polo and basketball as a child.
He nurtured an acting career on the side, appearing in the 2006 German film, "7 Zwerge – Der Wald ist nicht genug" and in 2008's "Stonehead."
He married Galina Valueva and he has two sons, Grisha and Sergei, and a daughter, Irina.
He defeated Evander Holyfield on December 20, 2008, in defense of his second WBA Heavyweight title.