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
Klitschko brothers down, Vitali Klitschko is widely regarded as the tougher fighter of the two. In fact, Vitali is the only heavyweight world champion to have never been knocked down in any fight, and alongside George Foreman he is the only heavyweight boxer in history to defend a world title after turning 40. Furthermore, his 87% knockout percentage is one of the best knockout-to-fight ratios of any champion in heavyweight boxing history. Vitali was also known for being unusually dominant in his fights, having almost never lost a round in his professional career as a boxer. During his time as WBC champion,