Herb Dean responds to UFC White House criticism, explains why he didn’t intervene during Ciryl Gane vs. Alex Pereira

Herb Dean has defended his refereeing of the interim heavyweight title fight between Ciryl Gane and Alex Pereira at UFC White House on Sunday, pushing back against criticism from Pereira and others who claimed he should have intervened after illegal blows to the back of the head.

Gane finished Pereira in the second round following a flurry of strikes after a knockdown, with several punches appearing to land in the prohibited rear-head area. Pereira subsequently released a statement blaming Dean for failing to stop the action, even suggesting the UFC should make an example of the referee.

Dean responded via Instagram on Tuesday with a detailed explanation of how the back-of-the-head rule is enforced in MMA. He clarified that the rule focuses on the nape of the neck and occipital junction—a one-inch band down the spine—rather than the entire rear portion of the head as some observers believed. Dean explained that strikes to the side and rear sides of the head, behind the ear, and other areas around the back are legal under unified MMA rules, distinguishing the sport's interpretation from boxing.

The referee maintained that Gane's strikes fell within legal territory and did not warrant intervention. Dean praised both fighters' performance, calling the bout "amazing," and used the moment to educate the MMA community on the technical specifics of back-of-the-head enforcement. His detailed breakdown—complete with visual demonstrations of where strikes are legal versus illegal—underscored a persistent source of confusion in MMA officiating, where rule interpretations can vary and fan perception often differs from official standards.