Wladimir Klitschko Universum Box-Promotion in Hamburg under the tutelage of Fritz Sdunek, often being featured on fight cards alongside his elder brother Vitali. After building an undefeated record of 24–0 with 22 KOs, he suffered his first loss to 24–13–1 Ross Puritty, in what was Klitschko's first and only professional fight in Ukraine. Puritty forced Klitschko, who had at that time not gone beyond 8 rounds, to punch himself out. Klitschko began to be overwhelmed in the 10th round and went down twice but was allowed to continue. At the start of the 11th round, with Puritty continuing to land hard punches,
Vitali Klitschko Foreman are the only heavyweight boxers in history to defend a world title after turning 40. Being the first professional boxing world champion to hold a PhD degree, and in reference to his punching power, Klitschko's nickname was "Dr. Ironfist". His younger brother, Wladimir, is a former unified world heavyweight champion. From 2006 until 2015, Vitali and Wladimir dominated heavyweight boxing, a period typically known as the "Klitschko Era" of the division. Klitschko formally began his political career in 2006 when he placed second in the Kiev mayoral race. In 2010, he founded the party Ukrainian Democratic Alliance for Reform