Artur Beterbiev and Dmitry Bivol will meet in a rare match between the two best fighters in the division to crown the first light heavyweight undisputed champion in the four-belt era Saturday night in Riyadh, Saudi Arabia (ESPN, 5:30 p.m. ET).

Bivol (23-0, 12 KO) brings the WBA title to the ring, along with a high fight IQ and a highly technical approach to boxing. WBO, WBC and IBF champ Beterbiev (20-0, 20 KO) takes a more brute-force approach to the fight game, as evidenced by his 100 percent stoppage rate.