Victory makes 37-year-old American the first male boxer to be crowned an undisputed champion in three different weight classes

Terrence Crawford is jumping two weights to fight Canelo Alvarez to unify the super middleweight belts on Saturday.

Terence Crawford stunned Saul 'Canelo' Alvarez on points in Las Vegas, becoming the first male fighter in the modern era to hold undisputed titles in three weight divisions.