Zuffa Boxing held its inaugural event at the home of the UFC on Friday in Las Vegas, with Ireland's Callum Walsh winning the headline fight.

Zuffa Boxing is scheduled to hold its first event with a fight card matching Callum Walsh against Carlos Ocampo.

Following two straight losses to Merab Dvalishvili, O’Malley will fight Song Yadong at UFC 324. That clash will serve as the co-main event at Saturday’s debut on Paramount+ after Kayla Harrison vs Amanda Nunes was postponed.

Few boxers had a more transformative 2025 than Haney, who shook off a beatdown by Ryan Garcia (later overturned to a no-contest) in 2024 and not only won both his fights but also picked up a title belt in a third weight class.

A new boxing promotion co-founded by UFC CEO Dana White debuts tonight. Zuffa Boxing, a joint venture between TKO Group Holdings and Saudi Arabian entertainment and hospitality company Sela Sport will use UFC’s promotional model and plans to hold 12 events this year,