World champion Jai Opetaia defends his IBF cruiserweight title with a brutal fourth-round knockout win over David Nyika in Australia.

Jai Opetaia (27-0, 21 KOs) remains a cruiserweight world champion after blasting out David Nyika (10-1, 9 KOs) in four rounds. The time of stoppage was 2:17.

Opetaia, 29, enters this fight on the back of a stoppage win against Jack Massey in October, which followed a decision victory over Mairis Briedis – Opetaia’s second win against the former champion. In fact, Opetaia’s first fight with Briedis took place at the venue for today’s title bout: the Gold Coast Convention and Exhibition Centre.

GOLD COAST, AUSTRALIA – The entertaining contest between IBF cruiserweight champion Jai Opetaia and David Nyika represented the first big fight of 2025, and also concluded with what is certain to be remembered as one of the knockouts of the year.

Jai Opetaia retained his IBF cruiserweight title Wednesday with a spectacular fourth-round KO of David Nyika in Gold Coast, Australia. Opetaia, ESPN's No. 1 cruiserweight, and Nyika engaged in a firefight from the opening bell that featured nonstop exchanges of power punches.

Jai Opetaia is on a hot streak, and David Nyika is the latest challenger to fall to the Australian’s heavy hands. At a boxing event in Gold Coast, Australia, on Tuesday, Opetaia successfully defended his IBF cruiserweight title with a brutal fourth-round knockout of the previously undefeated David Nyika.