Logan Paul will face Floyd Mayweather in an exhibition match tonight with a high-level undercard including former world champions Jarrett Hurd and Badou Jack.
The fight night takes place on pay-per-view from the Hard Rock Stadium in Miami where YouTube star Paul will take on boxing legend Mayweather.
And while the main event may be a monumental mismatch, there is expected to be some fascinating fights on the undercard, as well as a fun exhibition between former NFL star Chad 'Ochocinco' Johnson and bareknuckle fighter Brian Maxwell.
Former super welterweight champion Jarrett Hurd faces the returning Luis Arias, whose last opponent Luke Keeler earned a world title shot by beating.
And Badou Jack, who was scheduled to rematch Jean Pascal for the light heavyweight title before Pascal failed a drug test, will face undefeated Dervin Colina.
Here's everything you need to know about the Floyd Mayweather v Logan Paul undercard…
Jarrett Hurd vs Luis Arias
Former world champion Hurd will be looking to get back into title contention when he faces the game American Arias in the penultimate bout of the night.
Hurd lost his super welterweight belts to Julian Williams in 2019, but won his ring return against Francisco Santana early last year before the onset of the coronavirus pandemic.
Arias, on the other hand, hasn't fought since his shock loss to Luke Keeler in Belfast back in 2019
Badou Jack vs Dervin Colina
Badou Jack was set to rematch Jean Pascal for the world light heavyweight title, but champion failed a drug test and has been removed from the card.
Jack lost his belt to Pascal in 2019 during a thrilling back-and-forth clash, which saw both men put each other down, and this fight was expected to be the best of the night.
But he now faces unknown late-notice replacement Dervin Colina, who is undefeated at 15-0 but has yet to fight a name like Jack and is expected to be a warm-up opponent for the Swede.
Chad Johnson vs Brian Maxwell
This is another one of the fights which has fans curiously tuning into the pay-per-view card on Sunday night.
Johnson is a former NFL player, earning the nickname 'Ochocinco' during his time with the New England Patriots and his hometown team of the Miami Dolphins.
He's never fought before, and won't be fighting at professional level when he faces bareknuckle fighter Brian Maxwell, who despite having a wealth of combat sport experience hasn't won a fight in over two years.
Jean Carlos Torres vs Zack Kuhn
18-0 Jean Carlos Torres is a top Mayweather Promotions prospect, and is expected to walk through 10-7-1 Zack Kuhn.
Kuhn was stopped early in his last two bouts, while Torres, who trains with Gervonta Davis, has a flawless record and won his last four within the distance.
However, Torres has been out of the ring due to the lack of fights stemming from the coronavirus, and could find himself a bit rusty on Sunday night.
Adrian Benton vs Pedro Angel Cruz
Two undefeated fighters match up in this undercard bout, with 1-0 Pedro Angel Cruz, who won his debut by stoppage, facing off with Adrian Benton, who is 4-0 with three KOs.
This could be one of the most exciting bouts on the card, with both men young in their career and looking to inflict a loss on their opponent for the first time.
Benton is a slight favourite in this contest, which will take place over four rounds, but it's moreso anyone's fight than any of the pay-per-view bouts.