Women's Flyweight· Ranked #11
Casey O'Neill
“King”·
Irvine, Scotland
Pro record
12-2-0
Model Elo
1627
#244 of 1994
- Age
- 29
- Height
- 5'6"
- Reach
- 69"
- Stance
- Orthodox
- Team
- Bangtao Muay Thai
- Born
- Irvine, Scotland
- UFC debut
- Feb 19, 2021
Profile
Overview
Seven wins, two losses, and the losses came back to back. Casey O'Neill's UFC record is 7-2 with five finishes, and she carries a three-fight win streak into her next fight. The Scottish flyweight, nicknamed "King" and training out of Bangtao Muay Thai, has been in the UFC since February 2021.
Nine fights. Five finishes. Two decisions in the win column.
UFC Career
O'Neill debuted with a second-round TKO of Shana Dobson, then submitted Lara Procopio in round 3. A second-round TKO of Antonina Shevchenko made it three in a row, and a split decision over Roxanne Modafferi stretched the streak to four, her longest in the UFC.
It ended against Jennifer Maia, a unanimous decision loss in March 2023. A second-round submission loss to Ariane da Silva followed, 1:18 in. Two fights, two losses.
She answered with a unanimous decision over Luana Santos. Then came a first-round TKO of Gabriella Fernandes and a first-round submission of Eduarda Moura. Two of her five UFC finishes have come in round 1, and both belong to this current streak.
None of her wins came against opponents our model rates as elite.
Fighting Style
O'Neill is a busy, accurate striker who is hard to hit cleanly. She lands more than most fighters, and she is sharper than most when she throws. She does take more punishment than the UFC average, so the pace comes with some cost.
She is also a real submission threat. Two of her UFC wins came by submission, and she hunts for them more often than most. She is tough to take down, but she goes for takedowns at about the usual rate, so wrestling is not her main weapon.
Five of her seven UFC wins have come by finish: three by KO or TKO and two by submission. Two of those came in the first round, and two of the three stoppages came in round two. Her one submission loss shows she can be caught too.
Notable Wins
- Eduarda Moura — submission, round 1 (3:22), UFC 331 (2026)
- Gabriella Fernandes — TKO, round 1 (3:11), UFC Fight Night: Adesanya vs Pyfer (2026)
- Antonina Shevchenko — TKO, round 2 (4:47), UFC Fight Night: Santos vs. Walker (2021)
Quick Facts
- Division: Women's Flyweight
- UFC record: 7-2
- Professional record (all promotions): 12-2-0
- UFC debut: 2021
- Stance: Orthodox
- Height / reach: 5'6" / 69"
- Team: Bangtao Muay Thai
- Born: Irvine, Scotland
Written from MMA ProTips fight data, updated Nov 10, 2026.
UFC by the numbers
- UFC record
- 7–2
- since 2021
- Finish rate
- 71%
- 5 of 7 wins
- 1st-round finishes
- 2
- Elite wins
- 0
- vs opponents rated 1700+ at the time
- Longest win streak
- 4
- Current streak
- W3
- wins in a row
- Octagon time
- 1h 29m
- avg 9:55 per fight
- Opposition
- 1534
- avg opponent Elo (1500 = average)
Best wins
Ranked by the opponent's Elo rating going into the fight.
- 1619opp. Elo
unanimous decision, R3 · UFC 305 · Aug 17, 2024
- 1593opp. Elo
submission, R1 · UFC 331: Van vs. Pantoja 2 · Sep 19, 2026
- 1553opp. Elo
KO/TKO, R2 · UFC Fight Night: Santos vs. Walker · Oct 1, 2021
Career stats (UFC)
Career UFC averages. The white tick on each bar marks the UFC average.
Striking
UFC avg 3.35 · better than average
UFC avg 3.95 · below average
UFC avg 45% · better than average
UFC avg 52% · better than average
UFC avg 0.43 · below average
Grappling
UFC avg 1.52 · below average
UFC avg 15% · better than average
UFC avg 52% · better than average
UFC avg 0.58 · better than average
Where the strikes land
Where the strikes are thrown
Average fight time: 9:55
Fight history (9)
| Res | Opponent | Method | Event |
|---|---|---|---|
| W |  Eduarda MouraRecord after: 7-2 | submissionRound 1 · 3:22 | UFC 331: Van vs. Pantoja 2Sep 19, 2026 |
| W |  Gabriella FernandesRecord after: 6-2 | KO/TKORound 1 · 3:11 | UFC Fight Night: Adesanya vs PyferMar 28, 2026 |
| W |  Luana SantosRecord after: 5-2 | unanimous decisionRound 3 · 5:00 | UFC 305Aug 17, 2024 |
| L |  Ariane da SilvaRecord after: 4-2 | submissionRound 2 · 1:18 | UFC 296: Edwards vs. CovingtonDec 15, 2023 |
| L |  Jennifer MaiaRecord after: 4-1 | unanimous decisionRound 3 · 5:00 | UFC 286: Edwards vs. Usman 3Mar 17, 2023 |
| W |  Roxanne ModafferiRecord after: 4-0 | split decisionRound 3 · 5:00 | UFC 271: Adesanya vs. Whittaker 2Feb 11, 2022 |
| W |  Antonina ShevchenkoRecord after: 3-0 | KO/TKORound 2 · 4:47 | UFC Fight Night: Santos vs. WalkerOct 1, 2021 |
| W |  Lara ProcopioRecord after: 2-0 | submissionRound 3 · 2:54 | UFC Fight Night: Jung vs. IgeJun 18, 2021 |
| W |  Shana DobsonRecord after: 1-0 | KO/TKORound 2 · 3:41 | UFC Fight Night: Blaydes vs. LewisFeb 19, 2021 |