Dana White confirmed on social media Tuesday that Jai Opetaia and Brandon Glanton will fight for The Ring and Zuffa Boxing cruiserweight championships March 8 in Las Vegas.

Paramount+ will stream the 12-round bout between Australia’s Opetaia (29-0, 23 KOs) and Atlanta’s Glanton (21-3, 18 KOs) as a main event from UFC's Meta APEX Performance Center.

Opetaia, 30, is the most prominent roster addition announced by Zuffa Boxing since it launched last year. The Sydney native is the consensus No. 1 cruiserweight in boxing.

An IBF spokesperson informed The Ring on Tuesday that Opetaia still holds its cruiserweight title and that neither he nor anyone from his team has indicated that he will vacate it. Glanton is ranked 15th by the IBF, and thus eligible to fight for Opetaia's belt, but it was not clear based on Zuffa Boxing's announcement if it will be at stake.

Zuffa Boxing – fronted by White, president and CEO of UFC – initially indicated it wouldn't acknowledge IBF, WBA, WBC or WBO titles in its bouts. White admitted recently though, that Zuffa Boxing won't force its fighters to relinquish sanctioning championships they've won to fight for the fledgling promotional company's crowns.

Zuffa Boxing recognizes Ring titles in part because Turki Alalshikh, chairman of Saudi Arabia's General Entertainment Authority and owner of The Ring, is also part of Zuffa Boxing's leadership group.

Opetaia has defended his IBF belt four times since he won it a second time in May 2024, defeating Latvia's Mairis Briedis by unanimous decision in their 12-round rematch in Riyadh, Saudi Arabia.

Glanton, 33, stopped former WBA light heavyweight champ Marcus Browne (25-3, 16 KOs) after the sixth round of his most recent bout October 1 in Lagos, Nigeria. He lost his previous bout by unanimous decision to former WBO cruiserweight champ Chris Billam-Smith (21-2, 13 KOs) on April 26 at Tottenham Hotspur Stadium in London.

The Ring ranks Glanton as its No. 10 contender for Opetaia's title.