12:00BoxingSaul Alvarez v Callum Smith: HighlightsBBC Radio 5 Sports Extra Duration: 1 hour Sun 20th Dec 2020, 12:00 on BBC Radio 5 Sports ExtraHighlights of Saul 'Canelo' Alvarez v Callum Smith's fight for the WBC and WBA super-middleweight titles at the Alamodome in San Antonio, Texas, USA.GenresSportBoxingSeriesBoxing Source: BBC Online