Wladimir Klitschko is a Ukrainian former professional boxer who held the heavyweight titles twice between 2006 and 2017 and helped redefine the division.
Usyk has vacated the WBA, WBC and IBF heavyweight belts to allow contenders to fight for them, a move that opens the division and sets the stage for new champions. Kabayel has become WBC champion, while Gassiev is poised to inherit the WBA title; IBF actions point toward Frank Sanchez or Moses Itauma as next contenders. The sport faces a reshuffle as Usyk pivots toward a final, high-stakes bout.