Wladimir Klitschko Universum Box-Promotion in Hamburg under the tutelage of Fritz Sdunek, often being featured on fight cards alongside his elder brother Vitali. After building an undefeated record of 24–0 with 22 KOs, he suffered his first loss to 24–13–1 Ross Puritty, in what was Klitschko's first and only professional fight in Ukraine. Puritty forced Klitschko, who had at that time not gone beyond 8 rounds, to punch himself out. Klitschko began to be overwhelmed in the 10th round and went down twice but was allowed to continue. At the start of the 11th round, with Puritty continuing to land hard punches,
Vitali Klitschko that the referee should have stopped the bout during the last few rounds. Klitschko had retained his belt with official scores of 120–107, 120–105, and 120–107. During the post-fight interview, the American boxer Briggs said: "I've fought George Foreman, I've fought Lennox Lewis, and Vitali's the best." While Klitschko did not knock down Briggs, the latter collapsed after the fight and was hospitalized with facial fractures and a torn biceps. Klitschko's next fight was against mandatory challenger Odlanier Solis. The bout was tentatively scheduled for March 2011. On 11 January, it was officially confirmed that the fight between Klitschko and