Tyson Fury v Oleksandr Usyk: Fight details, ring walks, undercard and how to watch

Boxing history will be made on Saturday night in Riyadh when Tyson Fury and Oleksandr Usyk contest the first undisputed heavyweight world title fight of the four-belt era.

It's been a long time coming after a couple of delays, but as fight night finally approaches, here is everything you need to know about the 'Ring of Fire' event.

'Ring of Fire' is a boxing event headlined by the undisputed world title fight between heavyweight champions Fury and Usyk. Lineal champion Fury holds the WBC title while Usyk holds the other three belts – WBA, WBO and IBF.

It will be the first time two heavyweight champions have fought for all four belts. The last time boxing's top division had an undisputed champion was Lennox Lewis in 1999 when the British fighter won all three world titles. Since then, the WBO has been elevated to full world title status.

Before the main event, there will be nine supporting fights, including two more world title bouts.

The event will take place at the Kingdom Arena in Riyadh, Saudi Arabia. It will be the third major boxing event hosted at the arena, following Anthony Joshua's victorious bouts against Otto Wallin in December last year and Francis Ngannou in March.

'Ring of Fire' takes place on Saturday, May 18, with the fights starting at 8pm UAE time.

The event is headlined by the two best heavyweights on the planet. Fury is the reigning two-time world and lineal champion who is yet to taste defeat in his 35-fight professional career. After becoming a unified champion with a career-defining win over Wladimir Klitschko in 2015, Fury struggled with mental health and substance abuse problems and was out of the ring for three years.

He returned to once again rule the division with successive knockout wins over