The pair first met last September and after twelve rounds of exciting back and forth action the fight went to the judges scorecards for decision.
That showed at Friday's weigh-in, when the two fighters had to be separated in their only face-to-face appearance before the fight.
Here, we take a closer look at everything you need to know about how to order and watch Canelo vs GGG 2, not to mention a stacked three-fight undercard. At the same time it produced some hard feelings between the two fighters over Alvarez's contention that it was caused by eating contaminated meat in his native Mexico.
Most fans and analysts watching live or at home scored the bout in favor of Gennady Golovkin, so it came as a huge shock when it was announced that judge Adelaide Byrd had turned in a scorecard of 118-110 in favor of Canelo Alvarez. Golovkin is 38-0-1 with 33 knockouts.
"If he intends to knock out Golovkin, he's going to have to fight him", Sanchez said. But it was a tough, competitive matchup that delivered in other ways even without a victor at the end.
Armed with an iron chin, he will be hoping to add Canelo's name to the list of fighters he has felled inside the distance by inflicting the first knockout defeat of his rival's career.
"I'm bothered by all the stupid things they've been saying and I've been using it as motivation in my training for this fight". But Alvarez may have more at stake than Golovkin, the puncher from Kazakhstan who has held pieces of the middleweight title for eight years. "In order to win a fight you have to want to win a fight".
First up, pound-for-pound king and former four-division world champion Roman "Chocolatito" Gonzalez makes his eagerly awaited return against experienced Mexican warrior Moises "Moi" Fuentes in a ten-round super flyweight bout.