Saturday’s UFC Fight Night 276 card is set after the full lineup cleared the scales in Las Vegas, where Arnold Allen and Melquizael Costa made their main event official. Allen came in at 145 pounds, while Costa weighed 145.5 for the featherweight headliner scheduled for May 17.
For Allen, this feels like a pressure spot as much as a showcase. The former featherweight contender is trying to reassert himself in a division crowded with title hopefuls, and a strong performance could push him back into meaningful matchups against the top 10. For Costa, this is the kind of opportunity that can change a career overnight: beat a proven name in a UFC main event, and the conversation around him shifts immediately.
That’s part of why this matchup has drawn interest beyond a standard Fight Night billing. American MMA fans know Allen as a skilled, reliable contender who has shared the cage with elite competition, while Costa enters as the hungry spoiler with a chance to crash the rankings. In a featherweight class where movement near the top can happen fast, Saturday’s result could have ripple effects.
The rest of the main card is also locked in: Doo Ho Choi (146) vs. Daniel Santos (145), Juan Diaz (135.5) vs. Malcolm Wellmaker (135.5), Modestas Bukauskas (213.5) vs. Christian Edwards (214.5) at a 215-pound catchweight, and Timothy Cuamba (136) vs. Bernardo Sopai (136).
On the prelims, Nikolay Veretennikov (170.5) meets Chaos Williams (170.5), Ivan Erslan (205.5) faces George Tokkos (205.5), and Thomas Gant (156) takes on Arthur Mineev (155). Jacqueline Cavalcanti (135.5) meets Ketlen Vieira (136), Cody Brundage (185.5) faces Andre Petroski (185.5), Alice Ardelean (116) takes on Polyana Viana (115.5), Daniel Barez (125.5) meets Luis Gurule (125.5), and Shauna Bannon (115.5) faces Nicole Caliari (115.5).
With no major weight-cut drama to derail the event, the focus now shifts to whether Allen can protect his place in the division or if Costa can turn this Las Vegas main event into his breakout moment.