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,
Heavyweight boxing championship records and statistics inducted into the armed forces. He was stripped of WBC and WBA titles but remained The Ring and lineal boxing champion, despite not having a boxing match until October 1970. In 2005, Ukrainian boxer Vitali Klitschko retired as WBC Champion. Following his retirement, the WBC conferred "champion emeritus" status on Klitschko, and assured him he would become the mandatory challenger if and when he decided to return. On August 3, 2008 the WBC awarded Klitschko a chance to regain his WBC Heavyweight title against then-champion Samuel Peter. Vitali regained the title after Peter asked the bout be stopped after the