The bright lights of Las Vegas once again set the stage for electrifying MMA drama as UFC Fight Night: Allen vs. Costa unfolded at the Meta APEX on Saturday, May 16, 2026. Featherweight contenders Arnold Allen and Melquizael Costa squared off in a main event that delivered on every front: skill, grit, and momentum-shifting action. For Allen, who entered the octagon with just one win in his last four outings, the stakes could hardly have been higher. Costa, meanwhile, strode in with the swagger of a man riding a six-fight winning streak, including four stoppages and the distinction of being the first to finish Dan Ige. Could Allen halt the surging Brazilian’s ascent, or would Costa bulldoze his way into the division’s elite?
Allen, still only 32, has been a fixture in the UFC’s featherweight top 15 for nearly a decade. Once on a 10-fight winning streak, he seemed destined for a title shot before a tough loss to Max Holloway knocked him off course. Injuries and inactivity followed, and coming into Saturday night, Allen’s record over his last four fights was a disappointing 1-3. His last win had come nearly two years prior, a unanimous decision over Giga Chikadze in July 2024. The pressure was on to prove he remained a top contender and not just a gatekeeper for the division’s rising stars.
Melquizael Costa, known as “The Dalmatian,” joined the UFC in 2023 and initially stumbled, dropping two of his first three fights. But he found his stride in spectacular fashion, stringing together six consecutive victories and earning four stoppages along the way. Most notably, Costa shocked the MMA world by becoming the first man to stop Dan Ige—a feat that eluded some of the division’s most dangerous finishers. That win, combined with his recent run, had fans and pundits buzzing about Costa’s potential to shake up the featherweight hierarchy.
The anticipation was palpable as both fighters made their way to the cage. Costa, exuding confidence during his walkout, looked eager to seize the moment. Allen, draped in the Union Jack, balanced intensity with a hint of a smile—a man determined to reclaim his place among the elite. The crowd, both in the arena and watching around the globe, knew they were in for a treat.
From the opening bell, Allen set the tone with pressure, firing off a calf kick and crowding Costa. But Costa, ever the dynamic striker, answered with spinning back kicks and a flurry of kicks to Allen’s legs and body. Early in the first, Allen landed a thunderous left hook that spun Costa around and sent him to the canvas. Costa bounced back, but Allen pressed the advantage, securing takedowns and controlling the action on the mat. Costa, ever resilient, managed to reverse positions and land some shots from the top, but Allen’s damage was more significant. As the horn sounded, MMA Fighting scored the round 10-9 for Allen.
The second round saw Costa ramp up his kicking game, peppering Allen’s legs and body with volume. Allen’s jab, however, was a constant threat, snapping Costa’s head back repeatedly. The exchanges were fierce, with Costa’s kicks finding their mark and Allen’s boxing keeping him in the fight. As the pace slowed, both men landed telling blows, but Costa’s output edged him ahead. MMA Fighting gave the round to Costa, evening the score at 19-19 after two.
In the third, Allen’s boxing shined. He tagged Costa with sharp combinations, swelling his opponent’s face and forcing Costa to shoot for a takedown—an uncharacteristic move for the Brazilian. Allen capitalized, raining down elbows and opening up a cut on Costa. The Brit’s pressure was relentless, and his power shots began to wear Costa down. Allen’s dominance on the ground and in the exchanges earned him the round, putting him up 29-28 on MMA Fighting’s unofficial card.
The fourth round continued the back-and-forth narrative, with Costa starting strong with his kicks but Allen answering with jabs and a clinch takedown. Costa scrambled well, landing elbows from his back and getting back to his feet, but Allen’s pressure and striking remained the story. Both men landed significant shots, but Allen’s left hand and relentless output seemed to take the edge. As the round closed, Allen landed a head kick and another stiff left, keeping the momentum in his corner.
With the fight up for grabs entering the fifth, both fighters came out swinging. Costa landed early, forcing Allen to retreat briefly. But Allen responded with a clinch and a series of takedowns, smothering Costa against the fence and chipping away with short punches and elbows. Costa’s attempts at submissions were thwarted, and Allen finished the fight in dominant fashion, landing big shots on the ground as the final horn sounded. MMA Fighting’s live blog scored it 48-47 for Allen, but the official judges were even more decisive: 50-45, 50-45, and 49-46, all in favor of Arnold Allen.
After the fight, Allen didn’t hold back. “I’ve been f*cked in the ass so many times with these decisions,” he said, referencing his recent run of close and controversial losses. He called out Movsar Evloev for a rematch and even joked about trying to have a child before exiting the cage. According to CBS Sports, Allen expressed his frustration with recent results: “I’m pissed off. I need to get things right. The decisions are out of my control. I feel like I’m better. I had some ring rust, a lay off and was coming off an injury.”
Costa, for his part, remained gracious in defeat. Prior to the fight, he’d predicted another knockout, telling CBS Sports, “I said all along that I’d knock Dan Ige out. I didn’t mean any disrespect. I knew that our styles matched. I’m saying the same thing about Arnold Allen. People think that I talk too much, but really, I’m only talking 30 percent. Imagine all the other work that we’re doing with my team. I have a really strong team.”
Elsewhere on the card, fans witnessed a string of impressive performances: Khaos Williams scored a first-round TKO over Nikolay Veretennikov, Benardo Sopaj submitted Timmy Cuamba via rear-naked choke, and Doo Ho Choi shocked Daniel Santos with a late TKO. On the prelims, Nicolle Caliari, Luis Gurule, and Ketlen Vieira all notched wins, while Cody Brundage and Tommy Gantt delivered memorable stoppages.
With this win, Arnold Allen reasserts himself as a force in the featherweight division, ending Costa’s streak and reminding fans why he’s been a staple in the rankings for so long. For Costa, the setback is sure to sting, but his rise has been nothing short of impressive—and at just 26-7, his story in the UFC is far from finished. As the dust settles in Las Vegas, the featherweight landscape has shifted once again, and fans can only wonder: what’s next for these two warriors?