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 (UDAR) and was elected into parliament for this party in 2012. He was a leading figure in the 2013–2014 Euromaidan protests, and he announced his possible candidacy for the Ukrainian presidency but later withdrew and endorsed Petro Poroshenko. He was elected Mayor of Kiev on 25 May 2014. Klitschko headed the election list of the winner of the 2014 Ukrainian parliamentary election, the Petro Poroshenko Bloc, but he gave up his parliamentary seat to stay on as Mayor of Kiev. On 28 August 2015 the UDAR party merged into Petro Poroshenko Bloc. Klitschko thus became the new party leader. Klitschko