The Sphere in Las Vegas hosts UFC 306 on Sept 14, and the fight promotion has promised the one-off event will be a must-see production.  The UFC 306 fight card is headlined by a bantamweight title bout between champion  Sean O’Malley and top contender  Merab Dvalishvili .   Earlier this week, on Tuesday, Dvalishvili revealed on social media that he suffered a cut above his left eye during training that required stitches.  The cut reveal angered UFC CEO  Dana White who called Dvalishvili’s decision to disclose his cut ‘ next-level stupid .’   O’Malley reacted to Dvalishvili’s cut on Friday evening and doesn’t think it’s that big of a deal.   “I don’t think it’s that big of a deal,” O’Malley told  The Schmo .