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
Lennox Lewis vs. Vitali Klitschko looked exhausted, often staggering after coming together. Between rounds six and seven, it was determined by the ringside doctor that the damage to Klitschko's eye had become too severe and the fight was stopped. Because Klitschko's injury was a result of punches from Lewis, Lewis was named the winner of the fight by technical knockout. Klitschko was ahead 58-56 on the scorecards with two judges giving Lewis only rounds three and six and the other rounds five and six. The crowd proceeded to boo Lewis, and cheer Klitschko, presumably unhappy with the stoppage. Due to the controversial ending, there was