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Vasyl Lomachenko puts his WBO super-featherweight title on the line against former super-bantamweight champion Guillermo Rigondeaux at Madison Square Garden in New York.
Here's all you need to know.
Lomachenko vs Rigondeaux live stream
Lomachenko vs Rigondeaux is being shown by Box Nation, with coverage getting underway at 2am (Sunday morning).
Box Nation is a subscription channel, available on UK TV.
Live streams are also available via Box Nation's website and via their App.
The channel costs £12 per month.
Boxing top ten pound-for-pound fighters 14 September
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What TV channel is Lomachenko vs Rigondeaux on?
Box Nation is on the following channels:
Sky 437
Virgin Media 548
BT TV 415
TalkTalk 415
Freeview 288
Lomachenko vs Rigondeaux UK start time
The main event is expected to start at around 4.15am UK time.
Where is Lomachenko vs Rigondeaux taking place?
The blockbuster bout is taking place at one of the world's most iconic sporting venues.
Lomachenko and Rigondeaux go at it at Madison Square Garden in New York City.
Lomachenko vs Rigondeaux undercard
Christopher Diaz (21-0, 13 KO) vs Bryant Cruz (18-2, 9 KO)
Bryant Jennings (20-2, 11 KO) vs Don Haynesworth (13-1-1, 11 KO)
Michael Conlan (4-0, 4 KO) vs Luis Fernando Molina (7-3-1, 2 KO)
Shakur Stevenson (3-0, 1 KO) vs Oscar Mendoza (4-2, 2 KO)
Jose Gonzalez (8-0-1) vs Adan Gonzales (3-1-1)
Mikaela Mayer (2-0) vs Nydia Feliciano (9-8-3)