Mario Yamasaki Says Michael Chiesa’s Grappling Challenge is Childish

Referee Mario Yamasaki has caught wind of Michael Chiesa’s grappling challenge. Yamasaki officiated Chiesa’s last bout against Kevin Lee at UFC Fight Night 112. Lee locked in a rear-naked choke and Yamasaki called the fight off. “The Maverick” didn’t tap or pass out, but he stopped hand fighting. Chiesa recently issued a grappling challenge to […]