Klitschko brothers 5 months & 13 days. Vitali retained the WBC Heavyweight Championship until 15 December 2013, relinquishing his belt in pursuit of his political aspirations in his native Ukraine. The Klitschko brothers jointly run the professional boxing promotion companies ""K2 Promotions"" and ""K2 East Promotions"", as well as the ""Klitschko Brothers Fund"", a charity organization. They appear together on German TV shows and commercials, have a website shared between them, and support each other's training and fights. After Vitali's retirement, Wladimir continued to reign as champion & successfully defend all remaining title belts except for the WBC belt. He eventually lost
Vitali Klitschko final. In his autobiography, published in Germany in 2004, the boxer revealed that he tested positive for a banned steroid in 1996. He attributed the presence of the drug to treatment of a leg injury, but was dismissed from the Ukrainian boxing team and missed the Atlanta Olympics. His brother Wladimir moved up from heavyweight to super heavyweight to take his place in the squad and won the Olympic gold medal. His amateur record was 195–15 with 80 knockouts. Klitschko began his professional boxing career in 1996, winning his first twenty-four fights by either early knockout or technical knockout. He