Controversial referee Mario Yamasaki is weighing his options in terms of whether or not he wishes to officiate going forward.
Yamasaki is a longtime referee...
Valentina Shevchenko isn't as outraged with Mario Yamasaki as others are.
In the co-main event of UFC Belem, Shevchenko went one-on-one with Priscila Cachoeira. The gap...
Joe Rogan has offered his two cents on the controversy surrounding referee Mario Yamasaki.
This past Saturday night (Feb. 3), UFC Belem took place. In...
The Brazilian MMA Athletic Commission (CABMMA) was not going to be silent following UFC Belem.
In the co-main event of UFC Belem, Valentina Shevchenko took...
Once again, referee Mario Yamasaki has to explain himself following a bout in which his officiating was called into question.
This time, he has released...
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...
Ultimate Fighting Championship (UFC) President Dana White is not happy with Mario Yamasaki.
Last night (June 25), Yamasaki called a halt to the main event...
