Zuffa Boxing has announced that, for the main Event in Zuffa Boxing 04, Australia's Jai Opetaia (pictured) and Brandon Glanton of the United States will fight for the inaugural Zuffa Boxing cruiserweight championship. The fight will take place on March 8th at the Meta Apex in Las Vegas. Opetaia is the reigning IBF champion. His record is 29-0, with three IBF defenses against non-descript challengers in 2025. His efforts at unification have been largely ignored by the other champions and sanctioning bodies. Glanton is 2103 and is coming off a 2025 that saw him lose to former cruiserweight champion Chris Billam-Smith then defeat former light heavyweight champion Marcus Browne.