The middleweight championship of the world is on the line as the Mexican takes on the Kazakh at the T Mobile Arena and the winner also has a claim on the pound-for-pound number one spot.
The odds have been getting closer and closer, with this looking more and more like a rare 50-50 mega-fight
What time is Canelo vs GGG going to be on in the UK?
As ever, much depends on the length of the undercard fights and how long the fighters mess around with their ring walks.
However, the main event is likely to be on at around 3.30am-4am BST on Sunday morning.
What TV channel is Canelo vs GGG on and how to order it?
BoxNation have the rights to the fight in the UK and their subscribers will get it as part of the package.
If you do not have a subscription, buying the bout on a one-off basis will cost you £16.95.
You can book using your Sky or Virgin Media remotes or online here.
Freeview and Talk Talk customers can also order the fight, details here.
What are the odds? (Courtesy of Betfair)
Golovkin – 4/6
Golovkin by KO/TKO – 6/4
Alvarez – 6/4
Alvarez by points – 15/8
Golovkin by points – 7/2
Alvarez by KO/TKO – 8/1
Draw – 20/1
GGG vs Canelo undercard
Randy Caballero (24-0) vs Diego de la Hoya (19-0)
Joseph Diaz (24-0) vs Rafael Rivera (25-0-2)
Ryan Martin (19-0) vs Francisco Rojo (20-2)
Nicola Adams (2-0) vs Alexandra Vlajk (11-6)
Vergil Ortiz (6-0) vs Cesar Valenzuela (7-1)
Marlen Esparza (2-0) vs Tania Cosme (5-6-1)
Serhii Bohachuk (4-0) vs TBA