Flyweight · Women

Casey O'Neill

“King”
United Kingdom Fight Ready MMA debut 2014
#13 Flyweight UFC #12 · Women's Flyweight
Elo 1,702 peak 1,702 · 19 Sep 2026
Tapology Sherdog id 2850278
12-2pro record
3W current streak
1,546best win, Elo
1,274average opponent
-- born 7 Oct 1997
66.0" / 69.0" height / reach

Elo history

Hover for the fight at that point; dots are wins and losses

Record

-- – --
Rating by method KO1,294 Sub1,147 Dec1,264

Best wins

By the opponent's Elo on the night
  1. Luana Santos Decision R3 · 17 Aug 2024 · Ultimate Fighting Championship 1,546
  2. Eduarda Moura Submission R1 · 19 Sep 2026 · Ultimate Fighting Championship 1,533
  3. Gabriella Fernandes KO/TKO R1 · 28 Mar 2026 · Ultimate Fighting Championship 1,503
  4. Antonina Shevchenko KO/TKO R2 · 2 Oct 2021 · Ultimate Fighting Championship 1,475
  5. Lara Fritzen Submission R3 · 19 Jun 2021 · Ultimate Fighting Championship 1,451

Losses

Newest first
  1. Ariane Lipski da Silva Submission R2 · 16 Dec 2023 · Ultimate Fighting Championship 1,502
  2. Jennifer Maia Decision R3 · 18 Mar 2023 · Ultimate Fighting Championship 1,538

Fight history

21 bouts, newest first; amateur bouts are shaded. Hover a heading for what it means.
# Date Result Opponent Weight class Method Round Score Elo ± Opp Elo Odds Event
21 19 Sep 202629.0 yrs W12-2 Eduarda Moura 12-2 · 32.6 yrs Flyweight SubArmbar R13:22 1.00 1,641→1,702 +61 1,533 -180→-213 UFC 331: Van vs. Pantoja 2 Ultimate Fighting Championship
20 28 Mar 202628.5 yrs W11-2 Gabriella Fernandes 11-3 · 32.6 yrs Flyweight KO/TKOPunches R13:11 1.00 1,570→1,641 +71 1,503 +107→-120 UFC Fight Night 271: Adesanya vs. Pyfer Ultimate Fighting Championship
19 17 Aug 202426.9 yrs W10-2 Luana Santos 8-1 · 24.3 yrs Flyweight DecisionUnanimous R315:00 1.00* 1,486→1,588 +102 1,546 +137→+120 UFC 305: Du Plessis vs. Adesanya Ultimate Fighting Championship
18 16 Dec 202326.2 yrs L9-2 Ariane Lipski da Silva 16-8 · 29.9 yrs Flyweight SubArmbar R26:18 0.00 1,597→1,486 -111 1,502 -186→-190 UFC 296: Edwards vs. Covington Ultimate Fighting Championship
17 18 Mar 202325.4 yrs L9-1 Jennifer Maia 20-9-1 · 34.4 yrs Flyweight DecisionUnanimous R315:00 0.25* 1,672→1,597 -76 1,538 -180→-176 UFC 286: Edwards vs. Usman 3 Ultimate Fighting Championship
16 12 Feb 202224.4 yrs W9-0 Roxanne Modafferi 28-21 · 39.4 yrs Flyweight DecisionSplit R315:00 0.92* 1,653→1,675 +22 1,426 -360→-400 UFC 271: Adesanya vs. Whittaker 2 Ultimate Fighting Championship
15 2 Oct 202124.0 yrs W8-0 Antonina Shevchenko 11-3 · 36.9 yrs Flyweight KO/TKOGround & Pound R29:47 1.00 1,594→1,653 +59 1,475 -218→-225 UFC Fight Night 193: Santos vs. Walker Ultimate Fighting Championship
14 19 Jun 202123.7 yrs W7-0 Lara Fritzen 7-1 · 25.6 yrs Flyweight SubStanding Rear Naked Choke R312:54 1.00 1,525→1,594 +69 1,451 -106→+140 UFC on ESPN 25: Korean Zombie vs. Ige Ultimate Fighting Championship
13 20 Feb 202123.4 yrs W6-0 Shana Dobson 4-5 · 31.9 yrs Flyweight KO/TKOGround & Pound R28:41 1.00 1,477→1,525 +49 1,311 -230→-155 UFC Fight Night 185: Blaydes vs. Lewis Ultimate Fighting Championship
12 25 Sep 202023.0 yrs W5-0 Christina Stelliou 6-4 · 24.9 yrs Flyweight KO/TKOGround & Pound R27:12 1.00 1,432→1,477 +45 1,246 – UAE Warriors 13 UAE Warriors
11 29 Feb 202022.4 yrs W4-0 Caitlin McEwen 5-1 · 23.3 yrs Flyweight DecisionUnanimous R315:00 0.84 1,381→1,432 +51 1,347 – Eternal MMA 51: Perth Eternal MMA
10 4 Oct 201922.0 yrs W3-0 Miki Motono 2-0 · 25.4 yrs Strawweighttitle DecisionUnanimous R525:00 0.81 1,318→1,381 +63 1,352 – Eternal MMA 48: Fitikefu vs. Campbell Eternal MMA
9 27 Jul 201921.8 yrs W2-0 Jada Ketley debut · 24.7 yrs Strawweighttitle SubRear Naked Choke R12:32 1.00 1,268→1,318 +51 1,112 – Eternal MMA 46: O'Neill vs. Ketley Eternal MMA
8 5 Apr 201921.5 yrs W1-0 Amira Hafizović 1-1 Strawweighttitle DecisionUnanimous R325:00 0.84 1,231→1,268 +37 1,137 – Eternal MMA 43: Howard vs. Bynoe Eternal MMA
7 23 Feb 201921.4 yrs W5-2 Hannah Thomas 0-2 Bantamweight SubRear Naked Choke R13:00 1.00 1,205→1,231 +26 959 – Coastal Combat 5: Are You Not Entertained? Coastal Combat am
6 15 Sep 201820.9 yrs W4-2 Kristy Obst 2-0 Strawweight KO/TKOPunches R38:48 1.00 1,143→1,205 +62 1,124 – Eternal MMA 36: Pereira vs. Hibberd Eternal MMA am
5 10 Mar 201820.4 yrs W3-2 Rianne Ware debut Strawweight KO/TKOPunches R12:38 1.00 1,076→1,143 +67 1,083 – Eternal MMA 31: Fitikefu vs. Della Eternal MMA am
4 21 Oct 201720.0 yrs W2-2 Tina Trinh 0-1 Strawweight KO/TKOCorner Stoppage R36:00 1.00 1,011→1,076 +65 1,009 – Eternal MMA 29: Kings Eternal MMA am
3 5 Aug 201719.8 yrs W1-2 Gina Cardillo debut Atomweight SubArmbar R37:18 1.00 932→1,011 +80 1,007 – Eternal MMA 27: Vendy vs. Fitikefu Eternal MMA am
2 12 Dec 201518.2 yrs L0-2 Sam Egan debut Strawweight KO/TKOKO/TKO R10:49 0.00 981→929 -52 1,054 – Eternal MMA 14: Moore vs. Morris Eternal MMA am
1 19 Jul 201416.8 yrs L0-1 Hannah Dawson debut · 19.8 yrs Strawweight KO/TKOKnees R11:24 0.00 1,047→981 -66 1,047 – Eternal MMA 6: Cage Fighting at the Coolangatta Hotel Eternal MMA am