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 and awarding Byrd the win by RTD. At the time of the stoppage, Klitschko had won 8 of 9 rounds on one judge's scorecard, and 7 of 9 on the two others. Klitschko, who was later diagnosed with a torn rotator cuff, received much criticism for quitting the fight. Klitschko rebounded from his loss to Byrd by reeling off five victories in a row, earning himself a shot at WBC Heavyweight Champion Lennox Lewis. The fight between Lewis and Klitschko was to take place in December 2003, and Klitschko signed for a tune-up fight on 21 June 2003 as part