UFC 331 is taking place tonight, September 19, 2026, at the Crypto.com Arena in Los Angeles, with the full event streaming live on Paramount+. The highlight of the evening is the flyweight title rematch featuring reigning champion Joshua Van defending his belt against Alexandre Pantoja, whom Van claimed the title from at UFC 323 due to Pantoja’s injury. Odds have shifted ahead of the fight, now favoring Van as the betting favorite over Pantoja. The evening’s co-main event is a pivotal lightweight fight between Arman Tsarukyan and Mauricio Ruffy, scheduled for five rounds, potentially setting the stage for the next contender for Justin Gaethje’s lightweight crown.

The main card will begin at 9:00 p.m. ET, following preliminary bouts that start at 7:00 p.m. ET and early preliminaries at 5:30 p.m. ET. Alongside the headliners, the lineup includes notable fighters such as Patrício Pitbull facing Choi Doo-ho, Gable Steveson against Sean Sharaf, and Alonzo Menifield battling Iwo Baraniewski. The event is poised to deliver compelling matchups across various weight classes with a strong mix of title implications and rising stars.

Joshua Van comes into the main event with a 17-2 record and fresh off a successful May title defense via fifth-round TKO against Tatsuro Taira. Conversely, Alexandre Pantoja holds a 30-6 record and had previously dominated the flyweight division with four consecutive title defenses before his injury halted the UFC 323 bout. Despite Pantoja’s early win streak, the odds have now tipped with Van as the favorite to retain the belt in this much-anticipated rematch.

The co-main event features Arman Tsarukyan, who carries a 23-3 record and a recent submission win over Dan Hooker, against Mauricio Ruffy (14-2) who earned a TKO victory over Michael Chandler in June. This contest is being viewed as a significant stepping stone toward the lightweight championship, with Tsarukyan favored by sportsbooks. UFC 331 promises a night of intense fights with title ramifications and exciting talent showcasing their skills in Los Angeles.