At , Yamasaki was criticized by observers, including Dana White, after he failed to stop a fight between Valentina Shevchenko and Priscila Cachoeira: Shevchenko landed over two hundred strikes to Cachoeira's three. Yamasaki later said that he let the fight go on because he wanted to "allow to be a warrior and keep fighting". Dana White has previously repeatedly called for Yamasaki to be precluded from refereeing future UFC events, due to similar controversies. Since the event, Yamasaki has not applied for any UFC refereeing jobs although he has refereed a few other smaller organizations' events. He announced in 2021 that he planned on applying for more regular officiating assignments, as well as taking a judging course organized by the California State Athletic Commission.