Last November's KSI and Logan Paul fight was the second time the popular YouTubers met in the boxing ring, and drew a 21,000-strong live crowd and over 20 million views online.
It was one of the highest profile boxing matches in recent years, but didn't actually feature any professional boxers.
Now, Paul's younger brother Jake is pulling on the gloves as he steps into the ring with fellow YouTuber AnEsonGib.
Between the two, the internet personalities have 22 million subscribers so the potential for another big box office draw is there.
The fight is being held at the Meridian at Island Gardens in Miami, and will have the same rules as the KSI V Logan Paul rematch; 10 ounce gloves, six three-minute rounds and no headguards.
Here's everything you need to know:
Who are the fighters?
Jake Paul (Photo: Eric Espada/Getty Images)
23-year old Paul began his career in September 2013 posting videos on the now-defunct short video network Vine, amassing 5.3 million followers there.
Paul came to the attention of a wider audience after playing the role of Dirk Mann on the Disney Channel series Bizaardvark (about two teenagers who post funny songs and comedic videos on the Internet),
He's since gone on to accrue 19.7 million subscribers on YouTube, but his online presence* hasn't been without controversy.
In January 2018, Paul uploaded a video titled "I Lost My Virginity", using a thumbnail of himself and his then-girlfriend posing semi-nude on top of each other.
The video was age-restricted by YouTube, and critics called out the thumbnail - which was later changed - as being inappropriate for his younger audience.
Also in 2018, US tabloid TMZ featured a video in which Paul used the N-word multiple times while rapping.
Tonight's fight won't be his first, and Logan fought YouTuber Deji on the undercard of his big brother's first fight against KSI, the older brother of Deji.
(Photo: Eric Espada/Getty Images)
23-year old Brit AnEsonGib was born in Saudi Arabia, but was raised in Bath. He now lives in London.
The majority of his YouTube content focuses on the FIFA franchise of football games, and Gib first came to prominence playing fellow YouTubers KSI and Wroetoshaw at FIFA 14.
A notorious FIFA player, AnEsonGib is well known for his Ultimate Team pack luck, and refers to himself as the "Pack King" due to him getting high rated players in the packs.
Gib has won two previous amateur boxing matches, but will be making his debut as a professional boxer in Miami.
In terms of YouTube subscribers, Gib is at a distinct disadvantage to Paul - he 'only' has 2.12 million of them.
Why are they fighting?
"There is a personal, slightly more serious, factor at play," according to Sky Sports, who are broadcasting the fight.
"Logan Paul's defeat in the first professional boxing match between YouTubers against KSI means the family name must be avenged tonight by his younger brother Jake Paul.
"Jake Paul is desperate to avenge his brother. He said: 'I'm the A-side here. I wanted this fight but I could have chosen anyone. He is lucky to be the first that I will KO. After that it will be KSI. Everything is on my terms.
"'This kid's 15 seconds of fame is almost up.'
Who's going to win?
A fired-up Jake Paul is the favourite to win the fight (Photo: Eric Espada/Getty Images)
According to Oddschecker, Jake Paul is currently favourite to have his hand raised high in victory at the end of the match.
The best odds going in to the fight are as follows:
Jake Paul - 4/7AnEsonGib - 13/8Draw - 12/1
What else is on the card?
Despite the high-profile of the YouTuber's fight, it's not actually the main event on the card, that spot goes to Demetrius Andrade defending his WBO middleweight title against Luke Keeler.
Elsewhere, Tevin Farmer puts his IBF super-featherweight belt on the line against Joseph Diaz, and unified world super-bantamweight champion Daniel Roman takes on Murodjon Akhmadaliev.
The rest of the card in full:
Tevin Farmer vs Joseph DiazDemetrius Andrade vs Luke KeelerDaniel Roman vs Murodjon AkhmadalievAnthony Sims Jr vs Roamer Alexis AnguloAmanda Serrano vs Simone Aparecida Da SilvaOtha Jones III vs Juan SantiagoMovladdin Biyarslanov vs Nicolas Atilio VelazquezAlexis Espino vs Vincent Baccus
How do I watch it?
You will be able to watch the full show from 2am until 6am on Friday 31 January on Sky Sports Main Event.
The YouTubers' fight is expected to start shortly after 4am UK time, although obviously that's subject the change depending on how long other fights on the card run.
This article originally appeared on iNews