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
Lennox Lewis vs. Vitali Klitschko to capture the crown. The Lineal title would not be contested again for five years until Wladimir Klitschko beat Ruslan Chagaev in June 2009. Lennox Lewis vs. Vitali Klitschko Lennox Lewis vs. Vitali Klitschko, billed as "Battle of the Titans", was a professional boxing match contested on June 21, 2003 for the WBC, IBO, "The Ring" and "Lineal" Heavyweight Championships. It was Lewis' last professional boxing match, having decided to retire after eventually rejecting a rematch. A year earlier, Lennox Lewis had finally met Mike Tyson in the ring and achieved a landmark victory by knocking out Mike Tyson in