Edmen Shahbazyan  | Photo by Cooper Neill/Zuffa LLC Middleweight veterans Edmen Shahbazyan and Andre Muniz are set to face off at the UFC’s first pay-per-view card of October in Las Vegas, multiple people with knowledge of the booking told MMA Fighting’s Mike Heck and Damoon Martin. UFC 320 goes down Oct. 4 at the T-Mobile Arena, and the promotion has yet to reveal its headlining attraction