Boxing heavyweight champion ­Vladimir Klitschko has postponed his title fight next month against Briton Tyson Fury following a tendon injury in training, he said on Friday.

The 39-year-old Klitschko's WBA, WBO, IBF and IBO crowns were to be on the line when the pair met in the German city of Duesseldorf on October 24 but the Ukrainian sought medical treatment on Thursday after tearing a tendon in his calf.

A new date will be announced next week after further medical checks, with the location of the fight remaining Duesseldorf.

Klitschko has not lost for 11 years and has a record of 64 wins and three defeats, while the 26-year-old Fury is undefeated at 24-0.