Tags: Boxer.
Wladimir Klitschko (Ukrainian: Володи́мир Володи́мирович Кличко́ [Volodymyr Volodymyrovych Klychko]; born 25 March 1976) is a Ukrainian heavyweight professional boxer. Klitschko is the current WBA (Super) IBF WBO IBO and The Ring world champion (see List of heavyweight boxing champions.) Klitschko is the longest reigning IBF WBO & IBO heavyweight champion in history with the most title defenses for those organizations.