Conor McGregor will bid to avoid his third defeat in four fights tonight when he takes on Dustin Poirier in their much-anticipated trilogy bout.
The Irishman's only victory in the last five years came early in 2020 when he stopped Donald Cerrone inside 40 seconds.
And a second defeat by Poirier - six months after his reversal in Abu Dhabi - would pose very serious questions about the former two-weight world champion's future.
Both men go into tonight's fight at the T-Mobile Arena in Las Vegas knowing a title shot against lightweight champion Charles Oliveira will be next for the winner.
And everything you need to know about how to watch the fight - and when - can be found below...
What time will the fight start?
The main event will not start before 5am UK time and could start as late as 6am. The start time will be dictated by the length of the previous main card bouts which start at 3am.
The early prelim fights start at 11.15pm UK time and the prelim card begins at 1am.
How to watch via live stream and on TV
The early prelim fights will be shown on the UFC's Fight Pass streaming service. You can sign up on the website by clicking here.
The prelim card and the main card will be shown on BT Sport Box Office which you can purchase for £19.95 from here.
The prelim fights will also be shown on BT Sport 2 from 1am.
Full UFC 264 fight card
Main card (3am)
Dustin Poirier vs Conor McGregor
Gilbert Burns vs Stephen Thompson
Tai Tuivasa vs Greg Hardy
Irene Aldana vs Yana Kunitskaya
Sean O'Malley vs Kris Moutinho
Preliminary card (1am)
Carlos Condit vs Max Griffin
Niko Price vs Michel Pereira
Ryan Hall vs Ilia Topuria
Trevin Giles vs Dricus du Plessis
Early preliminary card (11.15pm)
Jennifer Maia vs Jessica Eye
Omari Akhmedov vs Brad Tavares
Zhalgas Zhumagulov vs Jerome Rivera
Hu Yaozong vs Alen Amedovski
Odds
Quotes corner
Conor McGregor
"This is my bread and butter, this is what wakes me up in the morning with fire in my belly," he added. "Errors to correct, tactics to prepare for, I've had a great camp and a great focus on the opponent.
"I'm going to go through his head, put holes in it and take it off his shoulders. He's done here, this is it for him, it's the end of the road.
"Saturday night he's getting walked around that octagon like a dog and put to sleep.
"This will be beautiful, it will be another feather in the cap, it's what I love to do. I love to come in here, defy the odds, do the unthinkable and put on a show."
Dustin Poirier
"For me the aura is not there anymore, a very dangerous fighter sitting here no doubt but I see a man. You guys in the crowd cheer it up and have fun but I see a man I've defeated and whom I'll defeat again.
"I knew this was next. As soon as I got to my hotel room I knew this was next, I've been preparing for this since the last fight ended."
