The middleweight rematch the world has been waiting for is set to launch BT Sport's new pay-per-view channel, BT Sport Box Office, in spectacular style.
John Murray, sportsbook manager at the Westgate, said there has been less hype in Las Vegas about the rematch than there was for the first fight, which took place last September, shortly after the megabout between Floyd Mayweather and Conor McGregor.
A fight that had to happen after the disputed draw in the first bout nearly didn't come to be after Alvarez tested positive for clenbuterol just before beginning training for what was supposed to be a May rematch.
Golovkin (38-0-1, 34 knockouts) is a slight favorite in the rematch, much as he was in the first fight.
For their first bout a year ago, Alvarez earned a guaranteed purse of $5 million while Golovkin made $3 million. "It's a little bit different this time, but I believe it will be a big fight for the fans".
The two leading middleweights battled to a 12-round draw last September in an exciting bout that most pundits believed Golovkin won. It was the first positive test of his career, a setback he blamed on the consumption of tainted steak in his home country of Mexico.
Johnny Avello, executive director of the Wynn race and sports books, said if the fight went off on Friday that he'd need the underdog. "He would have got knocked out the first time, but he decided to make it a track meet".
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Golovkin ditched his placid persona, tearing into Canelo on a number of occasions in the press before demanding revised financial terms to fight the two-weight world champion once again. "Injection marks were evidently there", Golovkin said.
Whether that translates into a more entertaining fight remains to be seen. "Every night before bed I visualize what I'm going to do, which is to get a knockout".
Whilst the selection of judges remained a hot topic during the negotiations for the rematch, both fighters have promised the scorecards won't be needed this time around, with both looking to cement their status as the world's best with a fearsome knockout.
"If Canelo gives me a chance and fights like he claims he will, I will knock him out", Golovkin said. But both fighters seem determined not to let it be decided by the ringside judges. "Like a real war".
"The error I made was there were some spots in the first fight where he was vulnerable and I didn't take advantage".
"If he intends to knock out Golovkin, he's going to have to fight him", Sanchez said.