Briton Callum Smith’s title fight against WBC, WBO and IBF light-heavyweight champion Artur Beterbiev in Quebec on 19 August has been postponed.
Unbeaten Canadian Beterbiev, 38, has had surgery following a bone infection in his jaw.
Smith, 33, stepped up to light-heavyweight after losing his WBA super-middleweight title to Saul ‘Canelo’ Alvarez in December 2020.
Beterbiev’s promoters Top Rank said a new date would be announced “soon”.
Smith set up the shot at Beterbiev by winning a title eliminator against Mathieu Bauderlique last August.
Russia-born Beterbiev is unbeaten after 19 fights and is the only world champion with a 100% knockout ratio.
Smith’s loss to Mexican Alvarez is the only defeat of his professional career.
Wins at light-heavyweight over Lenin Castillo and Bauderlique took his record to 29-1.
