The decision was more respectable than the one from a year ago, when Golovkin appeared to rally from a slow start to outbox Alvarez and defend his title.
Their first meeting nearly exactly a year ago was similarly close, although on that occasion the fight ended in a draw.
The Mexican claimed a frenetic final round on the scorecards which proved critical in preventing a repeat of the draw both men shared 364 days earlier at the same T-Mobile Arena venue.
Two judges scored the fight 115-113 to Alvarez while the other had it at 114-114. This time around, a victor was declared as the judges who saw the tilt tipping over to Mexican's side, 115-113, outnumbered the lone judge who scored the fight 114-114.
With animosity brewing between the two boxers, Alvarez had hoped to become the first fighter to put Golovkin on his back. In last night's fight, Golovkin rocked Alvarez in consecutive late rounds-I think the 10th and 11th-and Alvarez wobbled momentarily.
Well, not exactly. Even if the judges did their job and scored the first fight for Golovkin, both fighters did enough to show that this weekend's rematch was warranted. Criticized and chastised for his approach in the initial meeting last September, Alvarez looked like a different fighter this time around; in truth, he looked more like himself.
"Canelo fought the fight he needed to fight today, and he won", Sanchez said.
The two were initially scheduled for a May 5 rematch, but it was canceled after Alvarez tested positive twice for the banned substance clenbuterol.
The Mexican won the rematch on points following a frenetic encounter as Golovkin suffered the first defeat of his career. He was the one who was backing up. "It was a clear victory". (When asked about a third fight) Under the right conditions, yes.
Urias looked good in his return, tossing a ideal inning on just 12 pitches to close out the victory, striking out one. "It was a fight of two champions tonight". "It was a great fight, but in the end, it was a victory for Mexico", said Alvarez.
"We had a great fight, the one we expected the first time around".