promising heavyweight boxing contender. On 27 October 2007 Povetkin met Chris Byrd, who had lost his title to Klitschko the year before. Povetkin won by way of an 11th-round TKO victory. Byrd put up more resistance than Donald, but ultimately was overwhelmed, and his corner threw in the towel. Less than a week later, Eddie Chambers won a split decision victory over former title challenger Calvin Brock. This advanced Povetkin and Chambers to the final round of the tournament. On 26 January 2008, after initial problems Povetkin defeated Chambers by unanimous decision to become the mandatory challenger for Klitschko. On 19 July 2008, Povetkin knocked out Taurus Sykes in the fourth round. 2011–2013: WBA (Regular) heavyweight champion Povetkin vs. Chagaev After Wladimir Klitschko unified his WBO and IBF titles with David Haye's WBA title, Klitschko was upgraded to "Super Champion" by the WBA, thus making the "Regular Champion" title vacant. On 6 July 2011 negotiations for Povetkin to fight former WBA champion Ruslan Chagaev (27-1-1, 17 KOs) for the vacant title began between Sauerland, who promote Povetkin, and Chagaev's promoter Universum. Two days later, Povetkin's trainer confirmed the fight would take place on 27 August. At the time of the bout, Povetkin was ranked No.3 heavyweight contender by The Ring, while Chagaev was ranked No.4 contender by the same publication. There were concerns about Chagaev's health state, due to him being diagnosed with hepatitis B and the possibility of him infecting Povetkin. Chagaev, however, insisted that the medical examination had confirmed that his opponents (Povetkin included) weren't in danger of being infected. Most observers expected the fight to be close, giving Povetkin the edge in youth and athletic ability, while also giving Chagaev an advantage in terms of experience. Both fighters were given an even chance to win. Former WBA world champion Nikolai Valuev predicted Povetkin to win by decision or knockout in the championship rounds. The card was televised by Das Erste. With Teddy Atlas in his corner, Povetkin bested Chagaev by unanimous decision to capture the WBA (Regular) heavyweight title. Both fighters were active from the opening bell, with Povetkin appearing to have the upper hand in the first half of the fight, frequently closing the distance and working Chagaev's body, while blocking most Chagaev's shots with arms and gloves. Povetkin staggered Chagaev with an uppercut in the third round. Chagaev regained composure in the middle rounds, hurting