Callum Smith has two losses against two opponents on his boxing record. For a list of Smith's best fights, refer to "Best fights of Callum Smith".
On January 13, 2024 Callum Smith fought Artur Beterbiev in a light-heavyweight world-title fight for Beterbiev's WBC, IBF and WBO titles. Smith was 33 years old and with a record of 29-2 (21), and Beterbiev was 38 years old and with a record of 19-0 (19). Smith lost the fight via 7th-round TKO.
On December 19, 2020 Callum Smith, the WBA (Super) and The Ring champion, met Canelo Álvarez, the WBC champion, in a super-middleweight world-title unification fight. Smith was 30 years old and with a record of 27-1 (19), and Álvarez was 30 years old and with a record of 53-1-2 (36). Smith lost the fight via 12-round unanimous decision and lost his titles.