'Canelo' Alvarez KOs Caleb Plant , to Become Undisputed , Super Middleweight World Champion.br On November 6, br Saul 'Canelo' Alvarez br made boxing history br with a knockout win br over Caleb Plant.br On November 6, br Saul 'Canelo' Alvarez br made boxing history br with a knockout win br over Caleb Plant.br BBC reports that with the win, br the 31-year-old Canelo claimed br Plant's IBF belt to unify all four major belts.br BBC reports that with the win, br the 31-year-old Canelo claimed br Plant's IBF belt to unify all four major belts.br Heading into the fight, Canelo already br held the WBC, WBO and WBA belts. .br Alvarez connected with a devastating br left hook that floored Plant in round 11.br Alvarez connected with a devastating br left hook that floored Plant in round 11.br Plant beat the count but was quickly br returned to the canvas by a series br of unanswered punches from Alvarez. .br Plant beat the count but was quickly br returned to the canvas by a series br of unanswered punches from Alvarez. .br The win makes Alvarez the first Mexican fighter br to hold all four of the separate governing br bodies' belts at the same time. .br The win makes Alvarez the first Mexican fighter br to hold all four of the separate governing br bodies' belts at the same time. .br Since the WBO began sanctioning world-title fights in 1988, Alvarez is just the sixth fighter to be considered an undisputed champion.br Since the WBO began sanctioning world-title fights in 1988, Alvarez is just the sixth fighter to be considered an undisputed champion.br In December of 2020, Canelo claimed br the WBA and WBC belts from Callum Smith.br In May of 2021, he beat br Billy Joe Saunders to gain the WBO belt. .br It hasn't been easy to get to this point. With my team I have gone really far. This is for everybody, especially for Mexico. We did it tonight. We are only six. It keeps me happy and motivated to be one of the six undisputed fighters in the world, Saul Alvarez, via BBC.br It hasn't been easy to get to this point. With my team I have gone really far. This is for everybody, especially for Mexico. We did it tonight. We are only six.