WBO cruiserweight champion Marco Huck has replaced IBF cruiserweight champion Yoan Pablo Hernandez as the headliner on Sauerland Event’s March 29 card in Berlin. Huck will face an opponent to be named tomorrow. Hernandez, who is suffering from a gastritis (stomach lining infection) will not be fighting on that date. Hernandez was scheduled to defend against Pawel Kolodziej. Huck’s bout will be a voluntary defense. He recently defended his belt on January 25 against Firat Arslan.