Despite the referee's error, Nikolai Valuev became world champion The Russian boxer finally regained his title, albeit temporary, but still world heavyweight champion. In Berlin, Nikolai Valuev won on points against American John Ruiz - 116-111, 116-114 and 114-113. But in order to become a full-fledged holder of the WBA belt, Valuev will have to prove his superiority in a fight against the “temporarily inactive champion” Ruslan Chagaev, which could take place before the end of the year.