Last night at Stadhalle in Rostock, Germany, WBA Champions Ruslan Chagaev and Andriy Kotelnik retained their title belts at heavyweight and light welter, respectively. Chagaev, 25-0-1 (17), technically a “champion in recess”, handled the challenge of previously undefeated Costa Rican Carl Davis Drumond, 26-1 (20), well, outboxing his rival until suffering a bad cut above…