UFC 331 is scheduled for Sept. 19 in Los Angeles at Crypto.com Arena, with a flyweight title rematch headlining the event, according to multiple reports. The featured bout pairs flyweight champion Joshua Van against former champion Alexandre Pantoja, marking a return meeting after their previous encounter. Both outlets report that the rematch is positioned as the main event for the card.

In addition to the headliner, CBS Sports reports that Arman Tsarukyan is set to return, indicating another significant matchup will be included on the lineup. Yahoo Sports notes that the UFC has released the full fight card through social media, though specific undercard pairings beyond the headline are not detailed in the provided summaries.

Overall, the sources agree on the event date, location, and the main-event matchup between Van and Pantoja, while pointing to Tsarukyan’s return as an added headline-level element within the overall card announcement.