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 was reelected as mayor on 15 November 2015. Originally, Klitschko was an amateur kickboxer with a record of 34–2 with 22 knockouts. Amateur boxing record: 195 wins, 15 losses. kickboxing record: 34–2 with 22 knockouts. He was a kickboxing world champion six times (four in professionals and two in amateurs). In 1996, he turned boxing professional. As an amateur, Klitschko won the super-heavyweight championship at the first World Military Games in Italy in 1995. In the same year he won a silver medal at the World Championships in Berlin, Germany, where he was defeated by Russia's Alexei Lezin in the