(Reuters) - Tyson Fury said he respected Oleksandr Usyk ahead of their unified world heavyweight title bout but questioned whether his opponent could contend with a much bigger fighter after making the step up to the heavyweight class.

The long-awaited fight between the two undefeated boxers was originally scheduled for Feb. 17 in Riyadh but postponed two weeks before the bout when Britain's Fury suffered a cut during sparring.