UFC Fight Night: Allen vs. Costa Results & Video Highlights
Las Vegas, NV (May 17th, 2026)– Arnold Allen defeated Melquizael Costa via unanimous decision (50–45, 50–45, 49–46) in the main event of UFC Fight Night: Allen vs. Costa.
Allen put on a dominant, well-rounded performance, utilizing sharp straight lefts and a perfect 7-for-7 takedown display to halt Costa’s six-fight winning streak. Check out the video highlights and full card results below.
Main Card Results
Featherweight Arnold Allen def. Melquizael Costa Decision (Unanimous) (50-45, 50-45, 49-46)Rd 5, 5:00
Featherweight Dooho Choi def. Daniel Santos TKO (Punches)Rd 2, 4:29
Bantamweight Juan Diaz def. Malcolm Wellmaker Submission (Rear-Naked Choke)Rd 2, 4:08
Catchweight (205 lbs)Modestas Bukauskas def. Christian Edwards Decision (Split) (29-28, 28-29, 29-28)Rd 3, 5:00
Bantamweight Bernardo Sopaj def. Timmy Cuamba Submission (Rear-Naked Choke)Rd 2, 2:25
Welterweight Khaos Williams def. Nikolay Veretennikov TKO (Punches)Rd 1, 3:31
Preliminary Card Results
Light Heavyweight Ivan Erslan def. Tuco Tokkos Decision (Unanimous) (29-28, 29-28, 29-28)Rd 3, 5:00
Lightweight Tommy Gantt def. Artur Minev TKO (Strikes)Rd 2, 2:51
Women’s Bantamweight Ketlen Vieira def. Jacqueline Cavalcanti Decision (Unanimous) (29-28, 29-28, 29-28)Rd 3, 5:00
Middleweight Cody Brundage def. Andre Petroski TKO (Strikes)Rd 2, 0:44
Women’s Strawweight Alice Ardelean def. Polyana Viana Submission (Capsule Lock)Rd 2, 4:36
Flyweight Luis Gurule def. Daniel BarezDecision (Unanimous) (30-27, 30-27, 30-27)Rd 3, 5:00
Women’s Strawweight Nicolle Caliari def. Shauna Bannon Submission (Arm-Triangle Choke)Rd 3, 3:08
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