A big Flyweight fight is going down in “Sin City.”
Former two-time Ultimate Fighting Championship (UFC) Flyweight champion Brandon Moreno returns to action against top Japanese prospect Tatsuro Taira at UFC 323 on Sat., Dec. 7, 2025, inside T-Mobile Arena in Las Vegas, Nevada. MMA Junkie first reported the matchup.
Moreno (23-8-2) has looked rejuvenated since dropping back-to-back split decisions to Alexandre Pantoja and Brandon Royval. Late last year at UFC Edmonton (Nov. 2024), he dominated Amir Albazi over five rounds. Then, in the main event of UFC Mexico City earlier this year, Moreno defeated Steve Erceg via unanimous decision.
Moreno always seems to be one win away from reclaiming his title — and that may very well be the case again, especially if he delivers another eye-opening performance in Las Vegas.
Currently sitting at No. 5 in the rankings, Taira could punch his ticket to a title shot with a win over Moreno — particularly with champion Pantoja running low on fresh challengers.
Here is what UFC 323 looks like so far:
For the rest of the UFC’s upcoming schedule of events click here.
