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 vs. Odlanier Solís commissioner for the fight was the Bund Deutscher Berufsboxer and Tom Loeffler (K2 Promotions) was the promoter. Vitali Klitschko defeated Odlanier Solis in the first round. Solis went down near the end of the opening round, getting hit by a right hook to the temple. He immediately began grabbing his right knee upon attempting to get to his feet. He was able to make it to his feet. At that, the referee waved an end to the bout. After the fight, Solis was brought to Cologne's University Hospital, where it was confirmed that Solis suffered from a legitimate and serious