The main event of UFC Fight Night on May 16, 2026, at the Apex in Las Vegas will feature a featherweight clash between Arnold Allen and Melquizael Costa. The preliminary bouts are scheduled to begin at 6 p.m. ET, with the main card starting at 9 p.m. ET. Allen enters this contest with a professional record of 20 wins and 4 losses, boasting 7 knockouts, 4 submissions, and 9 victories by decision. Costa, on the other hand, carries a 26-7 record, with 9 knockouts and 8 submission wins.
Arnold Allen vs. Melquizael Costa Betting Odds and Analysis
Initial betting lines opened with Arnold Allen as a -150 favorite and Melquizael Costa as a +130 underdog. These odds have since shifted, with Allen’s price increasing to between -160 and -190, while Costa’s odds have moved to +140 to +165 across various sportsbooks. For those looking for specific outcomes, betting markets suggest Allen by points at odds ranging from 1.67 to 2.50, and by knockout, technical knockout, or submission at 3.60. Costa is priced at 3.00 to 4.50 for a decision victory and 4.33 for a finish. The oddsmakers are leaning towards the fight going the distance, with odds for over 4.5 rounds between 1.57 and 1.67, and under 4.5 rounds at 2.05 to 2.20. Prediction markets currently give Allen a 59-60% probability of winning.
Arnold Allen possesses a more extensive resume against top-tier competition, having demonstrated his ability to compete effectively against ranked opponents like Max Holloway and Movsar Evloev, even in defeat. His path to victory appears to be dictated by his consistent pace. Allen secured nine consecutive wins in the UFC prior to his 2023 setbacks, and has since rebounded with a victory over Giga Chikadze. Costa’s underdog status can be attributed to Allen’s striking advantage, as evidenced by Allen’s 3.47 significant strikes landed per minute compared to his opponents’ lower output. Betting on round props, Allen is favored in the later rounds, with odds between 17.00 and 23.00 for rounds 3 through 5. Costa winning by decision, priced at 4.50, might offer value for bettors who believe he can grind out a victory.
Allen, a southpaw from England, stands at 5’8″ with a 70-inch reach. He lands an average of 3.47 significant strikes per minute with 42% accuracy and defends 60% of his opponents’ strikes. His takedown average is 0.86 per 15 minutes, with 47% accuracy and 71% defense. Allen’s recent performances include a unanimous decision loss to Jean Silva on January 24, 2026, following a win over Giga Chikadze in July 2024. He previously defeated Calvin Kattar via injury stoppage in 2022 and Dan Hooker by knockout in the same year. Costa, standing at 5’10”, tends to be involved in shorter fights, averaging 9:11 minutes per bout. His UFC record stands at 7 wins and 2 losses, with 2 knockouts, 2 submissions, and 3 decisions. While details of his most recent UFC wins are not widely available, Costa has demonstrated significant finishing power.
From a betting perspective, this fight presents a classic scenario of a reliable favorite against a dangerous underdog. Allen’s wealth of experience and ability to go five rounds are weighed against Costa’s higher-risk, higher-reward fighting style. The increasing moneyline for Allen aligns with his proven resilience and consistent output over the championship rounds. Therefore, betting on Allen to win by decision and the fight going over 4.5 rounds appears to be the most logical approach for bettors who anticipate his experience and pace to prevail. However, Costa’s propensity for finishes and shorter fight times still present an upset potential, particularly in the early stages of the bout. His odds for a knockout or decision victory will appeal to those seeking higher volatility. As the fight week progresses, the betting market anticipates Allen to re-establish himself in the featherweight division with a controlled, decision-based victory. Nevertheless, the odds suggest there is still an opening for those who believe Costa can turn this main event into a chaotic fight that capitalizes on defensive lapses.
English Translation:
The main event of UFC Fight Night on May 16, 2026, at the Apex in Las Vegas will feature a featherweight bout between Arnold Allen and Melquizael Costa. The preliminary card is set to commence at 6 p.m. ET, with the main card kicking off at 9 p.m. ET. Allen enters the fight with a record of 20 wins and 4 losses, including 7 knockouts, 4 submissions, and 9 decisions. Costa holds a record of 26 wins and 7 losses, with 9 knockouts and 8 submissions.
Arnold Allen vs. Melquizael Costa Odds Analysis
The initial betting odds favored Allen at -150 and Costa at +130. The lines have since shifted to favor Allen more, now ranging from -160 to -190 for Allen and +140 to +165 for Costa across various sportsbooks. For specific outcome bets, markets list Allen by points at odds of 1.67-2.50, and by KO/TKO or submission at 3.60. Costa is priced at 3.00-4.50 for a decision win or 4.33 for a finish. The betting on the fight’s duration favors the over 4.5 rounds at 1.57-1.67, with the under trading at 2.05-2.20. Prediction markets indicate a 59-60% win probability for Allen.
Allen possesses an advantage in experience against top-15 opponents, having out-struck Holloway and Evloev despite his losses. Allen’s path to victory appears to hinge on his sustained pace. He achieved nine consecutive UFC wins before his 2023 setbacks, rebounding with a win over Chikadze. Costa’s underdog price reflects Allen’s striking advantage, with Allen landing 3.47 strikes versus opponents’ lower output. Round props favor Allen in the later stages, with odds of 17.00-23.00 for rounds 3-5. Costa by decision at 4.50 could offer value if he manages to grind out a win. The projected total significant strikes for the fight are between 140-160.
Allen, a southpaw from England, measures 5’8″ with a 70-inch reach. He lands 3.47 significant strikes per minute at 42% accuracy and defends 60% of strikes. His takedown average is 0.86 per 15 minutes with 47% accuracy and 71% defense. His recent record includes a unanimous decision loss to Jean Silva on January 24, 2026, following a win over Giga Chikadze in July 2024. He previously stopped Calvin Kattar via knee injury in 2022 and Dan Hooker with strikes that same year. Costa, at 5’10”, averages shorter fight times at 9:11, with a 7-2 UFC record consisting of 2 KOs, 2 submissions, and 3 decisions. Details on his latest UFC wins are scarce, but he has demonstrated finishing power.
In terms of betting, this matchup sets up as a classic scenario of a “trusted favorite versus a live underdog.” Allen’s deeper resume and five-round experience are pitted against Costa’s higher-risk, higher-reward style. Allen’s increasing moneyline edge aligns with his proven durability and output over 25 minutes, making decision props and the over 4.5 rounds the clearest betting angles for those who expect his pace and experience to be decisive. Costa’s finishing rate and shorter average fight time still give him upset potential, especially early on, making his KO or decision odds appealing to those seeking volatility. As the week progresses, the market anticipates Allen to reassert himself in the featherweight division with a steady, scorecard-driven victory, but the odds leave enough room for those who believe Costa can turn this main event into a chaotic fight that punishes conservative betting strategies.
