Jai Opetaia remains the unquestioned king of the cruiserweight division after a highlight-reel knockout of David Nyika on Wednesday in Gold Coast, Australia, to retain his IBF world title.

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Nyika prelims below and catch full results and highlights of ... IBF cruiserweight title: Jai Opetaia def. David Nyika via fourth-round KO | Watch video Heavyweight: Justis Huni def.

Jai Opetaia remains the unquestioned king of the cruiserweight division after a highlight-reel knockout of David Nyika on Wednesday in Gold Coast, Australia, to retain his IBF world title.

Jai Opetaia proved to be too much for a game ... with both men throwing hard and often throughout. Opetaia (27-0, 21 KO) had to weather multiple challenges, most notably a big rally from Nyika ...

You can follow him on Twitter: @MikeCoppinger Jai Opetaia remains the unquestioned king of the cruiserweight division after a highlight-reel knockout of David Nyika on Wednesday in Gold Coast ...