Watch Nate Diaz , Mike Perry, Francis Ngannou, Philipe Lins, Ronda Rousey, Gina Carano, and more put in final work ahead of Saturday’s event. Former UFC women’s bantamweight champion Ronda Rousey returns to the cage after n early a decade to take on fellow women’s MMA pioneer Gina Carano in the fight card’s main event. The open workouts begin at 9 p.m.