Featherweight contender Arnold Allen will face rising Brazilian prospect Melquizael Costa in the main event of a UFC Fight Night card on May 16 in Las Vegas. Allen, a long‑time presence near the top of the division, is looking to rebound and reassert his status as a title threat. Costa, who has been building momentum, gets a major opportunity in his first UFC headlining slot. The bout could reshape the upper tier of the featherweight rankings, with a strong performance potentially propelling the winner toward a future title eliminator. This Fight Night is part of a busy May slate for the promotion.
UFC Fight Night
Saturday, May 16, 2026
