Allen defeated Costa via Unanimous Decision (50-45, 50-45, 49-46) in the Featherweight Main Event on Saturday, May 16, 2026, at Meta APEX in Las Vegas, Nevada, as the fight ended the night on a finisher-filled note while producing one of the first moments of Octagon History. The main event was fought by two fighters competing for the Top Ten in their division.
MAIN EVENT1 bout
| Weight | Red Corner | Result | Method | R | Time | Blue Corner |
|---|---|---|---|---|---|---|
| #1Featherweight | Arnold Allen (20-4-0) | def. | Decision (Unanimous) | 5 | 5:00 | Melquizael Costa |
MAIN CARD5 bouts
| Weight | Red Corner | Result | Method | R | Time | Blue Corner |
|---|---|---|---|---|---|---|
| #2Featherweight | Doo Ho Choi | def. | KO/TKO | 2 | 4:29 | Daniel Santos |
| #3Bantamweight | Malcolm Wellmaker | ← def. | Submission | 2 | 4:08 | Juan Diaz |
| #4Bantamweight | Timmy Cuamba | ← def. | Submission | 2 | 2:25 | Benardo Sopaj |
| #5Welterweight | Nikolay Veretennikov | ← def. | KO/TKO | 1 | 3:31 | Khaos Williams (15-5-0) |
| #6Light Heavyweight | Modestas Bukauskas (19-6-0) | def. | Decision (Split) | 3 | 5:00 | Christian Edwards |
PRELIMS7 bouts
| Weight | Red Corner | Result | Method | R | Time | Blue Corner |
|---|---|---|---|---|---|---|
| #7Light Heavyweight | Tuco Tokkos | ← def. | Decision (Unanimous) | 3 | 5:00 | Ivan Erslan |
| #8Bantamweight | Ketlen Vieira (15-5-0) | def. | Decision (Unanimous) | 3 | 5:00 | Jacqueline Cavalcanti |
| #9Middleweight | Andre Petroski (13-5-0) | ← def. | KO/TKO | 2 | 0:44 | Cody Brundage (10-9-1) |
| #10Strawweight | Alice Ardelean | def. | Submission | 2 | 4:36 | Polyana Viana (13-8-0) |
| #11Strawweight | Shauna Bannon | ← def. | Submission | 3 | 3:08 | Nicolle Caliari |
| #12Lightweight | Tommy Gantt | def. | KO/TKO | 2 | 2:51 | Artur Minev |
| #13Flyweight | Daniel Barez | ← def. | Decision (Unanimous) | 3 | 5:00 | Luis Gurule (11-4-0) |
The co-headliner was the much-anticipated comeback fight for Doo Ho Choi. Choi crushed Daniel Santos with an uppercut to the body that ended the fight in the second round via Technical Knockout (4:29). Choi earned Fight of the Night honors along with Santos for this contest.
Amongst other preliminary bouts, Alice Ardelean became the very first fighter in UFC History to win a bout via a Capsule Lock Submission. Ardelean forced Polyana Viana to submit at 2:36 of round 2 and received the second Performance of the Night award. Cody Brundage stopped Andre Petroski in round two via Technical Knockout (0:44), Tommy Gant scored a Technical Knockout finish over short notice debutant Artur Minev, and Ketlen Vieira, Ivan Erslan, Luis Gurule and Nicolle Caliari each secured victories to close out the evening.
Frequently Asked Questions
What time does UFC Fight Night: Allen vs. Costa start?
UFC Fight Night: Allen vs. Costa starts on Sat, May 16, 2026 at 8:00 PM UTC.
Where is UFC Fight Night: Allen vs. Costa?
UFC Fight Night: Allen vs. Costa takes place at Meta Apex, Las Vegas, United States.
What fights are on the UFC Fight Night: Allen vs. Costa card?
Main Event: Arnold Allen vs. Melquizael Costa. Featherweight: Doo Ho Choi vs. Daniel Santos. Bantamweight: Malcolm Wellmaker vs. Juan Diaz. Bantamweight: Timmy Cuamba vs. Benardo Sopaj. Welterweight: Nikolay Veretennikov vs. Khaos Williams. Light Heavyweight: Modestas Bukauskas vs. Christian Edwards.
