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
Wladimir Klitschko peak of second best on "The Ring"s pound for pound list. BoxRec currently ranks him as the 20th best boxer of all time and the greatest European boxer of all time, pound for pound. Until his loss to Tyson Fury in 2015, Klitschko was also recognized as lineal champion by the Transnational Boxing Rankings Board, while the WBA recognised him as one of its "Super champions", a distinction given to boxers who hold that title in addition to those by other sanctioning bodies in the same division. From 2006 to 2015, Wladimir and his older brother Vitali (himself a former