Artur Beterbiev and Dmitry Bivol meet in a rare matchup between the two best fighters in the division to crown the first undisputed light heavyweight champion in the four-cushion era on Saturday evening in Riyadh, Saudi Arabia (ESPN, 5:30 PM ET).

Beterbiev (20-0, 20), the WBC, WBO and IBF titleholder, is boxing’s only champion with a 100% knockout ratio. He has been the 175-pound champion since 2017.

The battle has been going on for years. There hasn’t been an undisputed champion in the division since Roy Jones Jr. gave up one of his titles in 2000 (three-belt era).

“I want a good fight. I am preparing for a good fight,” Beterbiev said during a press conference on Thursday. ‘We’ll see… Be prepared, Dmitry. I’ll be ready.’

Bivol (23-0, 12 KOs), the WBA champion, was elevated from interim titleholder to full defending champion in 2017 and has since defended the title twelve times.

Beterbiev and Bivol were scheduled to fight on June 1, but a month before the fight, Beterbiev suffered a torn meniscus and underwent knee surgery, necessitating the postponement. Wanting to stay busy, Bivol fought Malik Zinad on that date, a sixth-round TKO victory, his only win in his past ten fights.

“Artur is a great champion,” Bivol said. “He has what I want. He has the belts. And it’s not just about belts. When I look at his skills, I also want to compare my skills with this great fighter.”

Stay here for fight results and round-by-round analysis.