Answer
IBF, or International Boxing Federation, is the title that Jai Opetaia held from 2022 to 2023. The IBF is one of the four major boxing sanctioning bodies, alongside the WBA, WBC, and WBO. Opetaia won the IBF cruiserweight title in August 2022 by defeating Mairis Briedis. He successfully defended the title once, against Michael Hunter Jr., before losing it to Arsen Goulamirian in January 2023.