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Jai Opetaia Wins Zuffa Debut as IBF Vacates Cruiserweight Title

By invoking Rule 5.H, the federation withdrew sanction to render the bout unsanctioned, which vacates the IBF belt.

Jai Opetaia during the IBF & Ring Magazine Cruiserweight World Title bout between Jai Opetaia and Huseyin Cinkara at Gold Coast Convention and Exhibition Centre on December 06, 2025 in Gold Coast, Australia.
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Overview

  • Opetaia defeated Brandon Glanton at Zuffa Boxing 04 in Las Vegas, claiming the promotion’s inaugural cruiserweight title and retaining The Ring championship.
  • The IBF announced it had withdrawn sanction for the fight, classified it as an unsanctioned contest, and said the cruiserweight title becomes vacant regardless of the result under Rule 5.H.
  • Opetaia had publicly said the IBF belt would be at stake, but the federation cited conflicting representations and the event’s presentation to justify reversing approval.
  • CBS Sports reported Opetaia’s camp paid more than $80,000 in sanctioning fees and completed an IBF same-day weigh-in, yet the belt was still vacated after sanction was pulled.
  • The dispute underscores Zuffa Boxing’s push for proprietary titles and leaves the IBF strap open, complicating Opetaia’s undisputed ambitions as the broader governance clash continues.