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Full list of undisputed champions in boxing as Canelo and Crawford prepare for historic clash

Saul 'Canelo' Alvarez will put his status as the undisputed super middleweight champion on the line when he takes on Terence Crawford in a Las Vegas superfight this weekend.

Canelo outpointed a committedly reticent William Scull earlier this year to unify all the major belts at 168 pounds for the second time in his career.

Saturday's (September 13, 2025) fight is a meeting between undisputed specialists, given Crawford has completed the set at both super lightweight and welterweight.

But what does it mean to be undisputed in boxing’s complicated landscape of multiple belts and champions? Allow us to explain.

Ranking the best pound-for-pound boxers in the world

What

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