SERGEY KOVALEV is challenging Andre Ward to ‘prove’ he is the better man by facing the dynamite-fisted Russian in a rematch.

Ward earned a controversial decision over Kovalev last month to win the WBA, WBO and IBF world light-heavyweight titles in Las Vegas.

The unbeaten American had to get off the canvas to win, but Kovalev and his team still dispute the judges’ decision and are pursuing an immediate rematch.

Ward maintains that he deserved the verdict but has not turned down the idea of a rematch. Kovalev’s promoter, Kathy Duva, claims there was a rematch clause in the fight contracts and that they are exercising that right.

A second fight seems the natural next step, given how close and entertaining the first meeting was. Both fighters remain two of the top operators, pound-for-pound, in the world and a rematch would have huge appeal.