Cruiserweight titleholder Yoan Pablo Hernandez broke his left hand during a sparring session, forcing his defense against Eric Fields to be called off Thursday, promoter Sauerland Event announced.
Hernandez (27-1, 13 KOs), a southpaw, was slated to make his third title defense against Oklahoma's Fields (21-1, 15 KOs) at Max-Schmeling-Halle in Berlin, Germany on Feb. 2.
Sauerland Event said the card would go on with Eduard Gutknecht (24-1, 9 KOs) still making the fourth defense of the European light heavyweight title against former world champ Juergen Braehmer (38-2, 30 KOs) in the main event.
"We will stand by Pablo and will make sure that he receives the best medical attention out there," Frederick Ness, managing director of Sauerland Event, said. "We are all hoping that he gets back as soon as possible."
According to Sauerland, this is the second time Hernandez has suffered this injury. He also broke his left hand two fights ago in his unanimous decision win against former titleholder Steve Cunningham in their February 2012 rematch.
Sauerland said that it also has added cruiserweight prospect Robert Woge (10-0, 9 KOs) to the card to face an opponent to be determined.
The 28-year-old Hernandez, a star Cuban amateur who defected to Germany, won a world title in the 200-pound weight class in October 2011 with a controversial sixth-round technical decision against Cunningham. But Hernandez won the rematch and followed with a decision win in a defense against Canada's Troy Ross on Sept. 15.