Casey O'Neill will face Eduarda Moura in a women's flyweight bout at UFC 331 on September 19 at Crypto.com Arena in Los Angeles. O'Neill enters on a two-fight winning streak, most recently scoring a first-round knockout against Gabriella Fernandes at UFC Seattle in March. Moura is 3-2 in the octagon and has struggled with weight management throughout her UFC tenure, most recently falling to Wang Cong by decision at UFC Vegas 113 in February.
The women's flyweight division gets a ranked matchup at UFC 331, with Casey O'Neill set to take on Eduarda Moura on September 19 at Crypto.com Arena in Los Angeles.
O'Neill, the 28-year-old Scot fighting out of Xtreme Couture, carries an 11-2 professional record and sits 12th in the flyweight rankings. She arrives riding back-to-back victories, the most recent a first-round knockout of Gabriella Fernandes at UFC Seattle this past March. An aggressive striker, O'Neill lands an eye-catching 7.89 significant strikes per minute at 52 percent accuracy, and she also adds a takedown dimension averaging 1.4 per 15 minutes. Standing five-foot-six with a 69-inch reach, she fights out of an orthodox stance.
Moura, nicknamed "Ronda," is a 32-year-old Brazilian from Galpao da Luta who holds a 12-2 overall record and sits one spot behind O'Neill at number 13 in the division. She carries a 3-2 mark inside the octagon and most recently dropped a decision to Wang Cong at UFC Vegas 113 in February. Weight management has been a recurring challenge throughout her UFC tenure. While her striking output is modest at 2.57 significant strikes per minute with 37 percent accuracy, Moura compensates with a strong grappling approach, averaging 3.58 takedown attempts per 15 minutes. She shares the same five-foot-six frame as O'Neill but holds a slightly shorter 67-inch reach.
Why it matters
- Both fighters are ranked in the flyweight top 15, making the outcome directly relevant to divisional positioning
- O'Neill's high-volume striking versus Moura's takedown-heavy game creates a sharp stylistic contrast
- A win for either fighter strengthens a case for a higher-profile matchup in a division building toward its next title picture
Saturday, September 19, 2026
