The Mexican won the rematch on points following a frenetic encounter as Golovkin suffered the first defeat of his career.
Alvarez claimed a majority decision, with the judges’ scorecards reading 114-114 115-113 115-113.
Amir Khan praised Canelo Alvarez following his victory over Gennady Golovkin in Las Vegas
Khan was impressed by the quality of the fight and lauded Canelo for his gameplan.
Khan tweeted: ‘What a fight. I gave the fight to Canelo. It was toe-to-toe action. Very exciting. Canelo surprised us all with the come forward pressure game plan. Well done to both Canelo and GGG. Boxing needed this.’
Northern Irish featherweight Michael Conlan also praised Canelo, who he felt was the deserved winner.
Conlan tweeted: ‘I don’t think it was robbery, had Canelo winning and I really wanted Triple-G to win.
‘Some very close rounds that could have gone either way. Canelo’s body work, sharp counters and punch output stole it for me. Great fight with two great champions!’
However, Mike Tyson’s former trainer Teddy Atlas was less complimentary about Alvarez’s performance, as he described the outcome as ‘a robbery’.
Alvarez (left) won on points against Golovkin following a dramatic and intense encounter
As reported by ESPN, Atlas said: ‘That’s doing a robbery without leaving fingerprints. It was an effective robbery. I don’t care if it’s by two points, or a hundred points.’
Atlas added that he felt Golovkin was controlling the fight and deserved to win.
He said: ‘I had Golovkin 117-112.
‘There’s two ways to fight to fight as the naturally bigger guy.
‘You can either fight as going inside and imposing your body on the other guy, or you fight on the outside and use the jab, control the range and make the smaller guy take all the chances.
Mike Tyson’s former trainer Teddy Atlas was less complimentary about Alvarez’s performance
‘That’s what Golovkin made Canelo do tonight. He fought like the bigger guy. He was controlling the fight with that jab.
‘He fought tall, long, using his jab… Hey, he won that fight. I don’t give a damn what people say.’