Terence Crawford has stunned Saul “Canelo” Alvarez at the Allegiant Stadium in Las Vegas to become the undisputed super-middleweight world champion.

The American makes history in the process and is now the first male boxer to reign as undisputed champion in three weight classes (junior welterweight, welterweight and super middleweight) in the four-belt era (since 2007).

The judges scored it 116-112, 115-113, and 115-113 for Crawford, in the early hours of Sunday, South African time.

The 37-year-old showed his class and landed 34 more punches, and threw nearly 100 more than the 35-year-old Mexican.

Crawford is still unbeaten (42-0, 31 KOs), and Alvarez suffered his third defeat (63-3-2, 39 KOs).

Alvarez hinted he may seek a rematch after his defeat.

“I feel great to share the ring with great fighters like (Crawford). If we do it again, it will be great. I already accomplished a lot in boxing, and my legacy is already there, so I take risks because I like boxing,” said Alvarez post-bout.

Crawford reacted: “I’d just like to say: thank you. Thank you to all of my supporters and all of my haters. I appreciate all of you. Shout out to everybody who came to support Canelo, and I’m happy that he gets to make it home to his children.”