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UFC 331: Van vs. Pantoja 2Women's FlyweightPrelims
Casey O'NeillWINNER
Casey
O'Neill
5-2UFC
28 yrsElo 1566
VS
Eduarda Moura
Eduarda
Moura
2-3UFC
32 yrsElo 1476
Final: Casey O'Neill by SUB Armbar
Who wins
Claude
63%
O'Neill
GPT
66%
O'Neill
Elo
63%
O'Neill
1566 vs 1476
Tale of the tapeUFC averages
5'6" Height 5'6"
69" Reach 67"
Orthodox Stance Orthodox
7.89 Landed / min 2.57
5.53 Absorbed / minlower better 2.50
52% Strike accuracy 37%
57% Strike defense 58%
1.40 Takedowns / 15 3.58
34% TD accuracy 34%
70% TD defense 80%
0.7 Subs / 15 0.4
How it ends
Claude: KO/TKO 22%Claude: Submission 13%Claude: Decision 65%
65%Decision
Claude calls Decision
KO/TKO 22%Submission 13%Decision 65%
GPT: KO/TKO 18%GPT: Submission 10%GPT: Decision 72%
72%Decision
GPT calls Decision
KO/TKO 18%Submission 10%Decision 72%
Formnewest first
Casey O'Neill923 days out
W
Luana Santos
U-DEC · 2024-03-09
L
Ariane da Silva
SUB · 2023-12-16
L
Jennifer Maia
U-DEC · 2023-03-18
W
Roxanne Modafferi
S-DEC · 2022-02-12
W
Antonina Shevchenko
KO/TKO · 2021-10-02
Eduarda Moura223 days out
L
Wang Cong
U-DEC · 2026-02-07
W
Lauren Murphy
U-DEC · 2025-07-12
L
Veronica Hardy
· 2024-11-16
L
Denise Gomes
S-DEC · 2024-01-06
W
Montserrat Conejo Ruiz
KO/TKO · 2023-11-04
Why
Claude
Casey O'Neill
63% · Decision
  • O'Neill's 7.89 SLPM / 52% accuracy vs Moura's 2.57 SLPM / 37%, a 5.3 strike-per-minute volume gap that dominates judging when the fight stays standing
  • Moura's takedowns land at only 34% against O'Neill's 70% TDD, expect many attempts, few finishes, and O'Neill scoring on the breaks
  • Moura's UFC losses (Wang Cong, Hardy, Gomes) all came against opponents who out-struck her; her wins were over a 42-year-old Murphy and a limited Conejo Ruiz
  • O'Neill's only stoppage loss was an armbar (da Silva), Moura's scramble submission is the one live upset route, capped by her 0.4 sub attempts per 15
Write-up

Market (62%) and Elo (59%) agree here and my read lands in the same band. O'Neill's defining trait is pace: 7.89 significant strikes per minute at 52% accuracy is elite for the division and roughly three times Moura's 2.57 SLPM at 37%. Moura's entire game is the takedown (3.58 per 15) but she only converts 34% of them, and O'Neill defends at 70% and has consistently scrambled back to her feet against grapplers. Moura's 80% TDD is a real asset but it's defensive, it stops O'Neill from wrestling, which O'Neill doesn't need to do. The cross-check on recent form also favors O'Neill: Moura's wins came against a 42-year-old Lauren Murphy and Veronica Hardy, while she was outworked by Wang Cong and lost a split to Denise Gomes at strawweight. O'Neill has now won two straight including a TKO of Fernandes, and her only losses were to a veteran Maia and an armbar from Ariane da Silva, the submission loss is the relevant caution, because Moura's route to winning is getting O'Neill down in a scramble and finding a choke or armbar. Moura's 0.4 sub rate says that's a low-frequency outcome. The likeliest shape is O'Neill stuffing or reversing early shots, pouring on volume in rounds two and three as Moura tires, and taking a clear decision; the TKO on a stationary Moura against the fence is the secondary path.

GPT
Casey O'Neill
66% · Decision
  • O'Neill has a +2.36 striking differential versus Moura's +0.07.
  • Moura's 3.58 takedown average threatens to disrupt O'Neill's striking volume.
  • O'Neill's 70% takedown defense could preserve enough standing time to win rounds.
Write-up

O'Neill's higher striking output and accuracy favor her in standing exchanges: 7.89 significant strikes landed per minute at 52% accuracy versus Moura's 2.57 at 37%. Moura's higher takedown rate offers a credible path to victory, but O'Neill's 70% takedown defense supports a narrow decision pick. Limited finishing and control data temper confidence. Method probabilities describe O'Neill's wins.