Klitschko brothers represented Ukraine at the 1996 Olympics, winning a gold medal in the super-heavyweight division. In 1996, when still an amateur, Vitali Klitschko tested positive for a banned substance and was removed from the Ukrainian boxing team. In June 1999, Vitali Klitschko won the WBO Heavyweight title from Herbie Hide via second-round knockout. He successfully defended the title twice before losing it to Chris Byrd. Six months later, younger brother Wladimir dethroned Byrd via lopsided points decision. He registered five successful title defenses, all by TKO until suffering an upset TKO loss to Corrie Sanders in March 2003. Vitali Klitschko lost
Vitali Klitschko vs. Dereck Chisora later. Chisora had been chasing a fight with Vitali's fellow world champion and brother Wladimir, and with that fight scheduled to happen on 11 December 2010, Klitschko pulled out just days prior with a torn abdominal muscle. The rescheduled fight for 30 April 2011 was also cancelled so [Wladimir] Klitschko could fight David Haye on July 2. With [Vitali] Klitschko due to fight Adamek, this left Chisora with no other option than to face his mandatory challenger for the British title, the upcoming Tyson Fury. Chisora's 14-0 win streak ended at the hands of the undefeated Fury, who won via