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 the sixth round, Vitali was in total control. The end came when the referee stopped the fight in the ninth round as Gómez appeared unable to withstand any more hits. On 26 September, Klitschko earned a one-sided TKO victory over Chris Arreola at the Staples Center in Los Angeles when Arreola's trainer, Henry Ramirez, asked the referee to stop the fight. Arreola was considered at the time one of the division's hardest punchers; however, Klitschko kept Arreola at bay with his left jab and hit him almost at will with his right. Arreola had been influenced by Samuel Peter's defeat