Saul Canelo Alvarez made history on Saturday, knocking out Caleb Plant in the 11th round to become the first undisputed world super middleweight champion by unifying all four major belts. 

Alvarez, 31, added the IBF belt to his WBC, WBA and WBO straps in a winner-takes-all showdown to join an exclusive club. He knocked Plant down twice in the 11th the first time with a left hook followed up by a right uppercut.