There's a real grudge match in store tonight at UFC 253.
Middleweight champion Israel Adesanya and Paulo Costa will put their unbeaten records on the line when they clash in Abu Dhabi.
Adesanya (19-0) and Paulo Costa (13-0) have yet to taste defeat in the professional ranks.
But who's record will suffer a first loss tonight?
Here's how you can watch it and what time the fights are expected to take place in the UK.
When and where is UFC 253?
UFC 253 is taking place on Sunday, September 27 at the UFC's Fight Island in Abu Dhabi.
What time do the fights start UK time?
The main fight is expected to start around 6am (BST) on Sunday morning, with the preliminaries (1am approx) and main card (3am approx) kicking (and punching) things off.
What TV channel are they on?
The fights will be shown on BT Sport 1.
Is there a live stream?
To live stream, head to the BT Sport website or app.
Fight card
Full fight details HERE