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Casey O'Neill

"King"
12-2-0#12Women's Flyweight★ 2bonusesAustralia / United KingdomLast 5
Amateur MMA 5-2

Last fight: Win vs Eduarda Moura · Submission · Sep 19, 2026

12-2-0 · 6 finishes · Full stats →
LAST FIGHT
WINvs Eduarda MouraSUB · R1 3:22
UFCCrypto.com UFC 331·September 19, 2026

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CAREER SUMMARY

Casey O'Neill holds a professional MMA record of 12-2-0. O'Neill has won 12 fights: 4 by KO/TKO, 2 by submission, 6 by decision. Of 2 career losses, 0 came by KO/TKO and 1 by submission. In the UFC, O'Neill lands 7.60 significant strikes per minute with 52% accuracy and averages 1.35 takedowns per 15 minutes. Most recent fight: September 19, 2026. Tracked organizations: UFC.

Profile

Height
5'6"168 cm
Weight
125 lbs57 kg
Reach
69"175 cm
Stance
Orthodox
DOB
Oct 7, 1997
Age
29
Nationality
Australia / United Kingdom
Birthplace
Irvine, Scotland

Latest on Casey O'Neill

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Career history

  1. WIN
    vs Eduarda Moura
    Crypto.com UFC 331· Sep 19, 2026· Women's Flyweight· 12-2 vs 12-3
    SUB
    R1 · 3:22
    POTN
  2. WIN
    vs Gabriella Fernandes
    UFC Fight Night: Adesanya vs Pyfer· Mar 28, 2026· Women's Flyweight· 11-2 vs 11-4
    TKO
    R1 · 3:11
  3. WIN
    vs Luana Santos
    UFC 305: Du Plessis vs Adesanya· Aug 18, 2024· Women's Flyweight· 10-2 vs 8-2
    UD
    R3 · 5:00
  4. LOSS
    vs Ariane Lipski da Silva
    UFC 296: Edwards vs Covington· Dec 16, 2023· Women's Flyweight· 9-2 vs 17-8
    SUB
    R2 · 1:18
  5. LOSS
    vs Jennifer Maia
    UFC 286: Edwards vs Usman 3· Mar 18, 2023· Women's Flyweight· 9-1 vs 21-9-1
    UD
    R3 · 5:00
  6. WIN
    vs Roxanne Modafferi
    UFC 271: Adesanya vs Whittaker 2· Feb 12, 2022· Women's Flyweight· 9-0 vs 22-19
    SD
    R3 · 5:00
  7. WIN
    vs Antonina Shevchenko
    UFC Fight Night: Santos vs Walker· Oct 2, 2021· Women's Flyweight· 8-0 vs 9-4
    TKO
    R2 · 4:47
    POTN
  8. WIN
    vs Lara Procopio
    UFC Fight Night: The Korean Zombie vs Ige· Jun 19, 2021· Women's Flyweight· 7-0 vs 7-2
    SUB
    R3 · 2:54
  9. WIN
    vs Shana Dobson
    UFC Fight Night: Blaydes vs Lewis· Feb 20, 2021· Women's Flyweight· 6-0 vs 4-5
    TKO
    R2 · 3:41
  10. WIN
    vs Christina Stelliou
    UAE Warriors 13· Sep 25, 2020· Flyweight· 5-0 vs 6-4
    TKO
    R2 · 2:12
  11. WIN
    vs Caitlin McEwen
    Eternal MMA 51· Feb 29, 2020· Flyweight· 4-0 vs 5-2
    UD
  12. WIN
    vs Miki Motono×3Title bout · Title win #3
    Eternal MMA 48· Oct 4, 2019· Strawweight· 3-0 vs 2-1
    UD
  13. WIN
    vs Jada Ketley×2Title bout · Title win #2
    Eternal MMA 46· Jul 27, 2019· Strawweight· 2-0 vs 0-1
    -
    R1 · 2:32
  14. WIN
    vs Amira Hafizovic×1Title bout · Title win #1
    Eternal MMA 43· Apr 5, 2019· Strawweight· 1-0 vs 1-2
    UD

Title bout· ×N = title win number N in that promotion

Background

Credentials, amateur pedigree and camp

BaseKickboxingBJJ
  • 2021Brown belt · BJJ · Casey Halstead
  • 2019Eternal MMA Women's Strawweight Championship · Eternal MMA
  • AGE 4Started in Kickboxing
  • AGE 13Started in BJJ
  • AGE 14Started in MMA

Camp

  • Fight Ready · Scottsdale, Arizona, United States
  • Bangtao Muay Thai & MMA · Phuket, Thailand
  • Xtreme Couture · Las Vegas, Nevada, United States Former
  • Southside MMA · Springwood, Brisbane, Australia Former
  • Matrix Boxing · Boxing · Brisbane, Australia Former
  • Tiger Muay Thai · Phuket, Thailand Former

Coaches

  • Cam O'Neill · Striking coach
  • Casey Halstead · Grappling coach
  • Eric Nicksick · Head coach

Training partners

  • Miesha Tate
  • Loma Lookboonmee

Fight DNA

Complete Fighter

UFCalendar's style model · Women's Flyweight roster (79 fighters)

PowerSpeedPrecisionDurabilityEngineWrestlingGround
Punch power82
Kick power64
Punch speed78
Kick speed70
Accuracy78
Takedowns90
Ground striking93
Submissions93
Chin94
Body strength70
Cardio94

Attributes are rated 0-100 by UFCalendar's style model.

By the numbers

Pro MMARecord: 12-2-0 · Source: UFCalendar
Striking
Strikes landed7.60per min
52% accuracy
Strikes absorbed5.36per min
58% avoided
Grappling
Takedowns landed1.35per 15 min
35% success
Takedowns stuffed70%
Submission attempts0.8per 15 min
UFC careerRecord: 7-2-0 · Source: UFCStats.com
Striking
Strikes landed7.60per min
52% accuracy
Strikes absorbed5.36per min
58% avoided
Grappling
Takedowns landed1.35per 15 min
35% success
Takedowns stuffed70%
Submission attempts0.8per 15 min
See every fight's numbers

Where they rank

All-time boards where Casey O'Neill sits in the top 25.

Bonus résumé

Casey O'Neill has won 2 UFC post-fight bonuses. Estimated bonus earnings: $175,000.

★ Performance of the Night ×21 finish incentive (+$25,000)
  1. ★ POTNvs Eduarda Moura · Crypto.com UFC 331Sep 19, 2026
  2. ★ POTNvs Antonina Shevchenko · UFC Fight Night: Santos vs WalkerOct 2, 2021

Estimates use each era's real amount: $50,000 from 2012, $100,000 from UFC 324, plus $25,000 finish incentives.

All-time bonus leaders →

Related fighters

Women's Flyweight top 5

Recent & upcoming opponents

Salary & career earnings

Disclosed purses, reported paydays and what we estimate Casey O'Neill earns per fight.

Casey O'Neill's salary & career earnings →

Official UFC Ranking

Casey O'Neill's standing in the official UFC rankings, tracked since 2013.

Current
#12 Women's Flyweight
Meta rank
#11 Women's Flyweight
Peak
#10 Women's Flyweight
First ranked
Oct 4, 2021
Times ranked
216

Women's Flyweight

#1#5#10#1520222023202420252026Oct 4, 2021 · #14Oct 25, 2021 · #15Feb 14, 2022 · #12Mar 29, 2022 · #13Jun 27, 2022 · #12Jul 11, 2022 · #11Aug 22, 2022 · #10Sep 12, 2022 · #11Sep 19, 2022 · #10Nov 14, 2022 · #11Mar 7, 2023 · #12Mar 28, 2023 · #13Apr 11, 2023 · #12Sep 19, 2023 · #14Oct 24, 2023 · #13Nov 7, 2023 · #12Dec 19, 2023 · #14Jan 16, 2024 · #13Mar 26, 2024 · #14Jul 23, 2024 · #15Feb 4, 2025 · #14Mar 25, 2025 · #13May 20, 2025 · #14Jun 10, 2025 · #13Jul 15, 2025 · #12Sep 9, 2025 · #11Feb 10, 2026 · #12Mar 31, 2026 · #11Jul 14, 2026 · #12Nov 10, 2026 · #12#12

View full UFC rankings →

UFCalendar Power Index rating

Current
1763▲36
Peak
1780Feb 13, 2022
Rated fights
14
15001600170018002020202220242026Apr 5, 2019 · 1535Jul 27, 2019 · 1580Oct 4, 2019 · 1613Feb 29, 2020 · 1644Sep 25, 2020 · 1680Feb 21, 2021 · 1717Jun 19, 2021 · 1745Oct 2, 2021 · 1773Feb 13, 2022 · 1780Mar 18, 2023 · 1743Dec 16, 2023 · 1704Aug 17, 2024 · 1730Mar 28, 2026 · 1727Sep 19, 2026 · 17631763

See the full Power Index →

Frequently asked questions

When does Casey O'Neill fight next?

Casey O'Neill has no confirmed upcoming fight.

What is Casey O'Neill's record?

Casey O'Neill's professional MMA record is 12-2-0.

Who is Casey O'Neill fighting next?

Casey O'Neill's next opponent has not been announced.

Who did Casey O'Neill fight last?

Casey O'Neill most recently fought Eduarda Moura at UFC 331 on Saturday, September 19, 2026, WIN (Submission).

What weight class does Casey O'Neill fight in?

Casey O'Neill fights at Women's Flyweight.

Is Casey O'Neill ranked in the UFC?

Casey O'Neill is currently ranked #12 in the UFC Women's Flyweight division.

How many knockouts does Casey O'Neill have?

Casey O'Neill has 4 wins by KO/TKO and 2 wins by submission.

How many UFC bonuses has Casey O'Neill won?

Casey O'Neill has won 2 UFC post-fight bonuses: 2× Performance of the Night.

How tall is Casey O'Neill?

Casey O'Neill is 5'6" (168 cm) tall.

How much does Casey O'Neill weigh?

Casey O'Neill weighs 125 lbs (57 kg).

What is Casey O'Neill's reach?

Casey O'Neill has a reach of 69" (175 cm).

How old is Casey O'Neill?

Casey O'Neill is 29 years old (born Oct 7, 1997).

Where is Casey O'Neill from?

Casey O'Neill is from Australia / the United Kingdom.

Get Casey O'Neill's fight history and stats as JSON with the MMA Fight Data API →