UFC bantamweight champion Sean O’Malley, one of the sport's "biggest stars," will defend his title against Merab Dvalishvili in the main event of UFC 306 on Sept. 14, the "first live sporting event at Sphere." UFC President Dana White announced the full card on social media Friday. White said that UFC has "already invested nearly" $20M in logistics to "ensure the show takes full advantage of Sphere’s technology" (LAS VEGAS REVIEW-JOURNAL, 7/26).