Saul ‘Canelo’ Alvarez beat fellow Mexican Jaime Munguia by a unanimous points decision to retain his WBA, WBC, WBO and IBF super-middleweight titles in Las Vegas.

Munguia was dropped for the first time in his career in the fourth when he was caught by a right uppercut before Alvarez went on to win on points – the judges scoring the fight 117-110, 116-111 and 115-112.

Alvarez has now extended his career record to 61 wins, two draws and two losses, while Munguia’s unbeaten record was ended in his 44th bout.