Wladimir Klitschko

Wladimir Klitschko is a Ukrainian former professional boxer who competed from 1996 to 2017. He held multiple heavyweight world championships between 2000 and 2015, including unified titles between 2008 and 2015. During this time he also held the International Boxing Organization and Ring magazine titles. A strategic and intelligent boxer, Klitschko is considered to be one of the greatest heavyweight champions of all time.