One of the most talented boxers on the planet, Errol Spence Jr, takes on Cuban champion Yordenis Ugas with three belts on the line tonight. Spence Jr made his name in 2017 when he came to the home of Sheffield United to defeat Kell Brook for the IBF title.
Since then, Spence Jr has gone on to beat everyone put in front of him, with impressive wins over Shawn Porter, Danny Garcia, Mikey Garcia and Lamont Peterson to remain undefeated with a 27-0 record.
But on Saturday night, he'll face a tough opponent in Ugas. The Cuban comes in off the back of an impressive victory over Manny Pacquiao - the last fight of his illustrious career - to retain his WBA title. Spence Jr comes in as the favourite, though, with Ugas losing to Shawn Porter in 2019.
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The winner of the bout in Arlington, Texas is likely in line to face Bud Crawford - who has previously defeated both Brook and Bolton's Amir Khan in comfortable fashion - in a unification bout of the welterweight titles.
Here's all you need to know ahead of the fight.
When is Spence Jr vs Ugas and what time will is start?
The two will meet in the ring this Saturday night, or Sunday morning in UK time. Ringwalks for the main event are expected at 4am.
The main card is set to get underway at 7 p.m. ET (midnight BST). These timings could change due to the length of the undercard bouts.
How to watch in UK?
FITE TV will broadcast the card in the UK, costing £11.41 ($14.99). Coverage on the service begins at 2am, meaning it’s likely only the final three fights on the undercard and then the main event will be shown.
You can live stream the event on the FITE TV app on Apple or Android.
Who is fighting on the undercard?
Errol Spence Jr vs Yordenis Ugas; for Spence's WBC and IBF welterweight titles and Ugas' WBA Super welterweight title
Radzhab Butaev vs Eimantas Stanionis; WBA welterweight title
Cody Crowley vs Josesito Lopez; lightweight
Isaac Cruz vs Francisco Vargas; lightweight
Brandun Lee vs Zachary Ochoa; super-lightweight
Vito Mielnicki Jr vs Dan Karpency; super-welterweight
Efetobor Apochi vs Adrian Taylor; cruiserweight
Fernando Garcia vs Angel Barrientes; super-bantamweight