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 Wladimir Klitschko. On 2 July 2012, it was announced that Vitali Klitschko will defend his WBC Heavyweight title on 8 September at the Olympic Indoor Arena in Moscow, Russia. His opponent for the fight was the then undefeated future WBA heavyweight champion Manuel Charr 21–0 (11 KO). Klitschko won the fight via technical knockout when Charr had to be stopped due to a cut received from Vitali's punches. Klitschko was expected to face Bermane Stiverne in a mandatory title defense, but was forced to pull out due to injury. On 15 December 2013, Vitali Klitschko stepped back from boxing. He