Top heavyweight contender Alexander Povetkin, 16-0 (12), stayed busy in preparation to his likely challenge of World Champion Wladimir Klitschko later this year by overcoming America’s Taurus Sykes, 25-5-1 (7), at 0:48 of the second round last night at Olimpyskiy Sports Palace in the Moscow suburb of Chekhov, Russia. 28 year old Moscow based Povetkin…