PARIS (Reuters) - The heavyweight world championship fight between holder Vladimir Klitschko and Frenchman Jean-Marc Mormeck on December 10 was called off on Monday after the Ukrainian underwent surgery to have a kidney stone removed.
"The fight has to be cancelled. We will provide more information at a news conference at 7 a.m. ET in Duesseldorf," Klaus-Peter Dittrich, Klitschko's representative, said in an email.
Mormeck's camp were hopeful, however, that the bout would be rescheduled at a later date.
"The December 10 fight in Duesseldorf is off but maybe it will be just postponed," Mormeck's press officer Clara Moreno said by telephone.
The 35-year-old Klitschko, who holds the IBF, IBO, WBO and WBA versions of the title, was looking to clinch his 50th knockout from 60 professional bouts against former cruiserweight world champion Mormeck.
Klitschko's older brother, Vitali, holds the only other major heavyweight belt after defending his WBC title in September against Pole Tomasz Adamek.
(Reporting by Julien Pretot and Karolos Grohmann; Editing by Mark Meadows)