Conor McGregor and Floyd Mayweather face off in the T-Mobile Arena in Las Vegas in the early hours of Sunday morning.
The fight is expected get underway at 5.00am but if the undercard bouts go the distance it could be pushed back an hour.
And with many fans in the UK planning all-nighters to watch the action, the hunt for illegal streams is already underway.
The fight will be broadcast on Sky Sports Box Office for £19.95 but some are keen to avoid paying and have taken to Twitter for help.
“Guys anyone could advise a free live stream link to watch McGregor vs Mayweather?” one user wrote.
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“Where can I live stream the Mayweather vs McGregor fight?” another added.
“If anyone could find me the McGregor Mayweather fight live stream I could watch on my phone, DM me please!” a desperate fan asked.
“Tomorrow I will live stream Mayweather vs Mcgregor on Facebook and get sued by Foxtel on Monday,” another said.
“Who gonna come through in the clutch and live stream the Mayweather McGregor fight tonight?” another asked.
When and where is the fight?
The coverage begins tonight with the main event happening in the early hours of Sunday morning, between 5am and 6am.
The fight will take place at the T-Mobile Arena in Las Vegas.
How can I live stream the fight?
Sky Sports Box Office is offering a live stream service which you can watch via a PC, MAC, NOW TV box, iPhone, iPad and Android devices for £19.95.
All you have to do is sign up, pay the fee and you’re free to watch.
However, you cannot watch the event through a Sky or Virgin box if you purchase to live stream option.
How do I watch the fight on TV?
If you decide to watch the fight on TV, Sky Sports will broadcast it live on their Box Office channel for £19.95.
In the US, however, the fight is much more expensive, setting fans back a staggering $100.
It will cost £77.60 ($99.99) to watch on Showtime PPV in HD and £69.85 ($89.99) in non HD.
What’s been said?
“I just saw him [Mayweather] broken if I’m being honest,” McGregor said after the face off.
“They should have left me where I was. I was good on my game. They shouldn’t have brought this animal over here.
“They have made a grave error and all I can do is capitalise on that.”
“The fight is not going the distance, no matter what he says,” Mayweather said.
“He’s getting knocked out.”