UFC Vegas 117 results: Arnold Allen gets back on track with decision over Melquizael Costa
Costa entered the bout on a six-fight winning streak but didn't have an answer for Allen.
Arnold Allen got right Saturday night at the Meta Apex in Las Vegas. After dropping three of his last four fights, the featherweight defeated Melquizael Costa via unanimous decision (50-45, 50-45, 49-46) at UFC Vegas 117, consistently getting the better of the exchanges and constantly landing straight left hands. Costa entered the bout on a six-fight winning streak with four of those victories coming inside the distance against such familiar names as Andre Fili and Dan Ige.
But it was Allen’s experience and well-rounded game that was too much for the Brazilian. Allen was impressive on the feet, but he was also 7-of-7 on takedown attempts and did some impressive work on the ground to control Costa. While Allen had been lacking in the win column of late, he was facing some of the best fighters in the division, dropping decisions to Max Holloway, Movsar Evloev and Jean Silva.
It was that level of competition that may have been the difference for the Brit, who didn’t have a specific callout after the fight and said he was focused on starting a family with his wife. Arnold Allen is one-of-a-kind 😂 📺 @paramountplus pic. twitter.
com/wPrLPvrm44 — UFC on Paramount+ (@UFConParamount) May 17, 2026 Check out complete UFC Vegas 117 results below: Main card Featherweight: Arnold Allen def. Melquizael Costa via unanimous decision (50-45, 50-45, 49-46) Featherweight: Dooho Choi def. Daniel Santos via TKO (punches) at 4:29 of R2 Bantamweight: Juan Diaz def.