IBF/WBO/IBO heavyweight champion Wladimir Klitschko (51-3, 45 KOs) scored an eleventh round KO over tough, awkward Tony "The Tiger" Thompson (31-2, 19 KOs) to defend his belts on Saturday night at the Color Line Arena in Hamburg, Germany. After a slow first round, Klitschko began to connect with his right hand in round two, a round in which both fighters were cut by a headbutt. Klitschko continued to headhunt while Thompson started having good results to the body in the fourth. By round seven, Klitschko seemed to be breaking down Thompson, who was once Wlad's sparring partner and seemed to be reverting to that mode as the fight went on. Thompson got up gingerly after both fighters got tangled up and went down to the canvas in the tenth. An animated Klitschko finally dropped Thompson for the count in the eleventh with a spectacular right hand. Time was 1:22. Next up for Klitschko will be a defense against Alexander Povetkin later this year.