Most HATED UFC Referee | The Controversial Legacy of Mario Yamasaki and His 9 Worst UFC Moments

Mario Yamasaki is one of the most hated UFC referees because over a 13-year span as a UFC referee, he made several horrible mistakes, including not noticing Frank Trigg's clear groin strike over Matt Hughes at UFC 52, pausing the fight between victor valimaki and alessio sakara, Giving Erick Silva a disqualification loss in the UFC over allegedly illegal punches to the back of the head to Carlo Prater, Letting Glover Teixeira dominate and punish Fabio Maldonado for 2 rounds straight, awkwardly stepping in between Cody Garbrandt and Augusto Mendes, not noticing Alex Oliveira's tap to Donald Cowboy Cerrone, letting Derrick Lewis punch and knockout Travis Browne with several unanswered shots, a horrible stoppage between Michael Chiesa and Kevin Lee, and letting Valentina Shevchenko punish Priscillla Cachoeira. Dana White has had many bad things to say about Mario Yamasaki including that he is "disgusting" and "has no business reffing fights" on UFC Tonight on Fox.