By Luke Furman

They are far from friends. Former stablemates Felix Sturm (36-2-2, 15KOs) and Sebastian Zbik (30-1, 10KOs) are ready to tear each other apart on April 13 at the Lanxess-Arena in Cologne, Germany. The two German boxers, who at one time stood side by side under Universum Promotions, are now bitter enemies. Sturm's WBA middleweight title will be at stake.

"Sebastian was previously only an interim [WBC] champion, and that title has zero value. He hasn't convinced me one time his in 31 fights. I'm going to roll over him like a train. Then everyone will see that Zbik has nothing more than a big mouth. I'm going to win the fight loud and clear," Sturm vowed.

Zbik was eager to answer back.

"Felix found the courage to get in the ring with me. Finally, he will have a decent opponent. On April 13, you can expect an excellent fight. I hear that he calls himself the super champion, but he's run away from a mandatory defense for the last three years. Sturm's recent fights have clearly displayed his weaknesses, and we are going to build on that," Zbik said.

Luke Furman covers boxing for bokser.org