Michael Chiesa discusses the most recent fallout surrounding a bad judgment call from referee Mario Yamasaki that might keep him from officiating a UFC fight
Dana White vows that Mario Yamasaki will not referee another fight in the UFC after mishandling Valentina Shevchenko vs. Priscila Cachoeira
Valentina Shevchenko talks about her fight with Priscila Cachoeira and whether the referee should have stopped it sooner
Veteran referee Mario Yamasaki responded on Monday to a mountain of scrutiny for his handling of the Valentina Shevchenko vs. Priscila Cachoeira bout.
Priscila Cachoeira revealed that she will need surgery following a brutal beatdown at the hands of Valentina Shevchenko at UFC Belem.
UFC president Dana White hopes referee Mario Yamasaki never sets foot in the octagon again after not stopping the UFC Fight Night 125 co-main event
Michael Chiesa wants his fight with Kevin Lee overturned to no contest and has officially filed an appeal in Oklahoma.
Michael Chiesa blasted referee Mario Yamasaki for now allowing him to continue to fight Kevin Lee's controversial fight-ending choke on Sunday night.
The UFC Fight Night 112 main event ended in controversy on Saturday when referee Mario Yamasaki stopped the bout between Michael Chiesa and Kevin Lee.
UFC vice president of regulatory affairs, Marc Ratner, has reviewed the Erick Silva disqualification from UFC Rio, saying that the result will stand as called.
Erick Silva may have been disqualified at UFC 142, but that won't stop the UFC from paying the young Brazilian his full salary from the
Erick Silva was disqualified for hitting Carlo Prater in the back of the head in their main card fight at UFC 142.
The referees and judges have been selected for UFC 141: Lesnar vs Overeem.