After the UFC 306 Pre-Fight Press Conference at the Sphere in Las Vegas, the fighters faced off with the opponents.  The press conference featured the entire fight card. The event is headlined by a bantamweight title bout between champion  Sean O’Malley and top contender  Merab Dvalishvili .  In the co-main event, women’s flyweight champion  Alexa Grasso puts her title on the line against former titleholder  Valentina Shevchenko in a trilogy bout.