UFC 331: Pantoja vs. Van Flyweight Title Rematch

The men’s flyweights own the spotlight on Saturday night in Los Angeles, and they’re bringing a score to settle.

At UFC 331 inside Crypto.com Arena, former champion Alexandre Pantoja returns from a nine-month layoff to run it back with Joshua Van in a main event rematch for the flyweight title. The main card starts at 9 p.m. ET, but the story has been building since the opening seconds of their first meeting.

Back in December at UFC 323, Pantoja — ESPN’s No. 8-ranked pound-for-pound fighter — barely had time to get going before disaster struck. In the opening moments, he suffered a dislocated elbow, an abrupt, brutal end that handed Van a TKO victory and the men’s flyweight belt. No feeling-out process. No championship rounds. Just chaos, a freak injury, and a new champion crowned before anyone really learned what this matchup looked like.

Van didn’t sit on the throne quietly. While Pantoja rehabbed, the new champion went straight into validation mode. He defended the title against rising contender Tatsuro Taira at UFC 328 in May and closed the show emphatically, scoring a fifth-round knockout that stamped his name as more than just the beneficiary of an injury. That finish shifted the conversation: Van isn’t just holding Pantoja’s old belt. He’s building his own résumé.

Now Pantoja walks back into the Octagon with two targets: reclaim the championship he never truly got to defend and erase the image of that dislocated elbow as the defining moment of his reign. Van, still riding the momentum of that Taira stoppage, has a different mission — prove that the first result wasn’t a fluke and that the belt belongs around his waist, injury or not.

While the flyweights settle their business on top, the co-main event at UFC 331 might quietly shape the future of the lightweight division.

Arman Tsarukyan returns against Mauricio Ruffy in a matchup that pits one of the promotion’s most suffocating grapplers against one of its most ruthless knockout artists. Tsarukyan hasn’t fought in the UFC since November 2025, but he hasn’t exactly disappeared. He has stayed sharp in competitive wrestling matches with RAF and kept his profile high as a fan favorite on social media, where his training clips and grappling highlights have only fed the anticipation for his comeback.

Across from him stands Ruffy, a man who has built a reputation on switching off opponents’ lights. Thirteen of his 14 career wins have come by knockout, a staggering ratio in a division loaded with elite talent. In 2026 alone, he stopped Rafael Fiziev and Michael Chandler, two proven names with heavy hands of their own. When Ruffy fights, judges usually get a quiet night.

So the stage is set: a flyweight rematch heavy with unfinished business, and a lightweight clash that could propel the winner straight into the title conversation.

Los Angeles gets it all on Saturday — belts, bad blood, and the kind of stylistic clashes that tend to rewrite divisional pecking orders in a single night.