Conor McGregor takes on Chad Mendes this weekend in one of the most anticipated fights of the year.
Jose Aldo pulled out of his fight with the Dubliner just over a week ago, prompting the UFC to go for Plan B or as McGregor describes it 'the B level guy' and install Mendes as the Brazilian's replacement.
'The Notorious' has yet to taste defeat in the UFC, while Mendes' two defeats both came against Aldo.
McGregor is as short as 8/15 with some betting firms to win the bout, while 'Money' is 8/5 to be victorious in Vegas.
Here is all you need to know ahead of the mega-fight...
McGregor takes on Mendes at the MGM Grand, Las Vegas in the early hours of Sunday morning, Irish time.
What time does the action start?
The broadcast does not start until 3am, so McGregor fans can prepare themselves for a late one.
Where can I watch it?
The fight is live on BT Sport 2, who are showing all the action from the Prelims and the main card.
Coverage of the Prelims start at 12am, while the main card gets underway at 3am and runs until 7am.
For more informations about the fight