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 able to defend himself. Odlanier Solis was set to make his comeback on November 25, 2011 in Trabzon, Turkey, but due to issues he was not able to leave the United States and his fight was taken off the card. On December 12, 2011, it was confirmed that Dereck Chisora would be Vitali Klitschko's next opponent. Vitali Klitschko vs. Odlanier Solís Vitali Klitschko vs. Odlanier Solis was a heavyweight fight for the WBC heavyweight title. The fight was official confirmed on January 11. It took place on March 19, 2011. The location for the fight was Lanxess Arena, Cologne, Nordrhein-Westfalen,