The octagon returns to Sin City for Saturday's UFC Vegas 117: Allen vs. Costa event at the Meta Apex.The fight card is headlined by a featherweight bout between No. 7 rankedArnold Allen(20-4) and No. 12 ranked Melquizael Costa (26-7). Allen will enter the bout having lost three of his last four fights. Costa brings with him a six-fight winning streak. The UFC Vegas 117 live results from Las Vegas begin at 5 p.m. ET on MMAWeekly.com. Refresh the page for the latest outcomes. UFC Vegas 117 Official ResultsMain Card (Paramount+, 9 p.m. ET)Arnold Allen vs. Melquizael Costa Dooho Choi vs. Daniel SantosJuan Diaz vs. Malcolm WellmakModestas Bukauskas vs. Christian EdwardsTimmy Cuamba vs. Bernardo SopajPreliminary Card (Paramount+, 5 p.m. ET)Nikolay Veretennikov vs. Khaos WilliamsIvan Erslan vs. Tuco TokThomas Gantt vs. Trey OgdenJacqueline Cavalcanti vs. Ketlen VieiraCody Brundage vs. Andre PetroskiAlice Ardelean vs. Polyana VianaDaniel Barez vs. Luis GuruleShauna Bannon vs. Nicolle Caliari