Tony Bellew will go toe-to-toe with Oleksandr Usyk at the Manchester Arena this evening.
Bellew is coming off the back of his second win in a row against David Haye earlier this year.
And tonight the Liverpudlian has the chance to make history and become the first Briton to hold four world titles in a weight division.
Fireworks are expected as Bellew goes up against Ukraine’s Usyk – the IBF, WBO, WBA and WBC cruiserweight champion who is unbeaten.
The big fight between Bellew and Usyk is being shown on Sky Sports Box Office with passes to watch live costing £19.95.
But boxing fans who were thinking of trying to illegally stream the big fight have been warned about the dangers of doing so.
Prior to the Anthony Joshua and Alexander Povetkin match in September boxing rights holders secured a big victory against online pirates.
As part of the continuing crackdown on illegal streaming, boxing rights holders were awarded the same treatment as their football counterparts.
Court orders have compelled ISPs to block illegal live streams of Premier League and UEFA football matches in real-time.
And in September Mr Justice Arnold also awarded Matchroom Sport Limited and Matchroom Boxing Limited a blocking order.
This requires UK ISPs to block, in real time, servers that are hosting illegal live streams of its boxing events.
The order took effect in time for the Anthony Joshua v Alexander Povetkin world title fight, and will be in place for an initial period of two years.
The group managing director of Matchroom Sport is Eddie Hearn, who is Bellew’s promoter.
The judgement will mean it will be even harder for online pirates to watch Bellew Usyk without paying a penny.
Speaking about the ban, Steve Dawson, Group CEO Matchroom Sport, said: “This blocking order is a game-changer in our efforts to tackle piracy of our PPV and non PPV boxing events.
“It will allow us to quickly and effectively block and disrupt illegal broadcasts of our shows.
“The protection of the copyright in broadcasts of our events is hugely important to us and we are pleased that the Court has recognised this with the granting of this blocking Order.”
While Matthew Hibbert, Head of Litigation at Sky, added: “We’ve seen how effective the Premier League blocking order has been in disrupting pirated streams of matches.
“The blocking order awarded to Matchroom will make illegal streams of boxing harder to find and less reliable to watch.
“People who try to stream Saturday’s fight illegally on social media, pirate sites or so called ‘Kodi boxes’ risk missing all the action and exposing themselves to harm.”
The latest warning comes after it emerged a man who broadcast part of a pay-per-view fight on his phone was fined thousands of pounds.
Josh Mellor told The Independent he had no idea he was breaking the law when streaming several minutes of a pre-boxing fight coverage on Periscope.
He said: “I went round to my friend’s house to watch a pay-per-view boxing match and while we were waiting for the fight to start I started scrolling through Periscope.
“I’d heard in the pub, and from friends, that you could watch free live streams of the fight and wondered how as we’d paid to watch it.
“Whilst on Periscope, I saw a number of streams and while exploring I clicked the ‘Go Live’ button.
“I streamed the pre-fight coverage from my mate’s TV for a few minutes before quitting the app.”
He added: “I think there are a lot of people out there who don’t understand that digital piracy comes with some very real risks.
“There are laws around it and the implications can be huge, from large fines to actual jail time.”