Artur Beterbiev and Dmitry Bivol are both vying to become the first undisputed light heavyweight champion in over 20 years.

The two men do battle in Riyadh, Saudi Arabia this weekend, with Beterbiev putting his WBO, WBC and IBF belts on the line against WBA champion Bivol.

The winner will walk away with all four world titles, and in doing so will be the first man to accomplishment that for two decades.

The last man to do that was boxing legend Roy Jones Jr, who reigned as undisputed champion for over three years from 1999 to 2002.

Ahead of Saturday’s highly-anticipated showdown, Jones Jr has told Talksport that he feels he would have knocked out both Beterbiev and Bivol during his prime, but explained why the bouts would have been different.

“Bivol because of his boxing skills and feet would have been a difficult task because he’s not as easy to catch as people think he is because of the mobility of his legs.

At the same time, Artur with the the punching power, he is one of the hardest punchers the division has ever seen. With him being as hard of a puncher he is, you have to always keep that in mind and be very careful with how you deal with it and not let him hit you with free shots that normal people can, he’s a different type of puncher.

“He would have been a problem in one way, although I think I would have got him quicker than I got Bivol, but Bivol would have been a problem in another way, they both would have been different. I would have got Artur probably than I would have got Dmitry.”

With the fight just days away, one world champion who previously fought Beterbiev has warned Bivol that he is in ‘a lot of trouble.’