A tense weigh-in took place in Germany, between former Universum stablemates Felix Sturm (36-2-2, 15KOs) and Sebastian Zbik (30-1, 10KOs). They boxers have traded words for weeks and promise to make it a war. Sturm defends his WBA middleweight title against Zbik on Friday night at the Lanxess Arena in Cologne. In the co-feature, rising heavyweight Denis Boytsov (30-0, 25KOs) will fight American veteran Domonick Guinn (33-8-1, 22KOs).