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. Chris Byrd of the fight with Byrd being elusive and making himself a difficult target. After 9 rounds Vitali had suffered a torn rotator cuff and despite being clearly ahead on the scorecards (88-83, 88-83, & 89-82) he retired on his stool handing the win to Byrd. Harold Lederman, HBO's unofficial judge, had Klitschko ahead 88-83 at the time of the stoppage. Vitali's status as a rising star of the Heavyweight division took a knock after this with HBO commentator Larry Merchant said, "He doesn’t have the mentality of a champion. I can hardly believe what I just saw." Byrd's first defence