NEWARK, New Jersey :Georgia's Merab Dvalishvili scored a second-round submission win over Sean O'Malley to retain his bantamweight title at UFC 316 on Saturday, with Kayla Harrison also winning by submission in the co-main event, tapping out Juliana Pena to claim the women's bantamweight crown. With President Donald Trump sitting cage-side at the Prudential Center in Newark, New Jersey, Dvalishvili set about defending the title he won from O'Malley in September by putting his opponent under

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