LAS VEGAS -- Terence Crawford proved that size didn't matter, putting together a master class to defeat Canelo Alvarez by unanimous decision and become the new undisputed super middleweight champion Saturday night at Allegiant Stadium.

Although the scores were 116-112, 115-113 and 115-113, it felt as if Crawford won by a wider margin as he stymied Alvarez and left the Mexican star shaking his head in frustration when he couldn't impose his will on his allegedly smaller opponent.

With the win, Crawford (42-0, 31 KOs) becomes the first male boxer in the four-belt era to be undisputed in three weight classes. And he did it with style in front of an announced crowd of 70,482 in the stadium -- most of whom were Alvarez fans -- and millions more who streamed the fight live on Netflix.

After c

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