WBA middleweight champion Felix Sturm (31-2-1, 13 KOs) will next defend his world title against unbeaten Koji Sato from Japan. The bout will take place on April 25th in Krefend, Germany. Sato is 14-0 with 13 KOs. He is ranked WBC #6 and WBA #14. Sturm is coming off a brilliant performance against mandatory challenger “Hurricane” Sebastian Sylvester in November.