Callum Smith and Saul 'Canelo' Alvarez clash this weekend after the Englishman accepted the fight on just five weeks notice.
Smith defends his world title against the Mexican, who is widely regarded as the No.1 boxer in the world.
Canelo is moving back down in weight having beaten Sergey Kovalev last year to become a light-heavyweight world champion.
Here's everything you need to know about the fight:
Where and when is it?
The bout takes place at the Alamodome in San Antonio, Texas in the early hours of Sunday, December 20.
What time does it start at?
The first fight is scheduled to start around 1am, with the main event expected to get underway at 4.15am Irish time.
What channel is it on?
The event will not be shown live on TV, but will be streamed live on DAZN.
Undercard fights
Christian Alan Gomez Duran vs Angel Hernandez
Austin Williams vs Isiah Jones
Raymond Ford vs Juan Antonio Lopez
Alexis Eduardo Molina vs Robert Greenwood
Marc Castro vs Luis Javier Valdes
Betting odds
Canelo 2/9
Smith 7/2
Draw 25/1
