RIYADH, Saudi Arabia — Dmitry Bivol became the undisputed light heavyweight world champion with a majority decision over Artur Beterbiev Saturday evening at ANB Arena in Riyadh, Saudi Arabia.

Four months after suffering a razor-thin defeat to Beterbiev, Bivol (24-1, 12 KOs) returned the favor, avenging the lone blemish on his record with a tactical approach that paid dividends in the mid-to-late rounds.