Skip to content
FIGHTDETECTIVE
All Fighters
Casey O'Neill

Casey O'Neill

6W · 2L
Orthodox
Women's Flyweight
67% finish rate80% as favorite100% as underdog
75%wins
1520
ELO Rating

Fighter overview

ELO RatingHow is ELO calculated?18-month recency decay · streak amplification · activity velocity · career-death penalty. Old champions can't hide behind past glory.Understanding our ELO →

1520.4Contender↗

Recency-weighted skill · finish-adjusted · streak-amplified

Division ELOHow is ELO calculated?18-month recency decay · streak amplification · activity velocity · career-death penalty. Old champions can't hide behind past glory.Understanding our ELO →

#6of 24 active
Women's Flyweight rankings →

Age

28
Oct 7, 1997

Height

5'6" (167.64 cm)

Reach

175.26 cm

Win Rate

75.0%

Output & Defense

Rate-normalized career statistics (per 15 minutes, except strike rates which are per-minute)

Strikes landed / min
7.89
SLpM
Strikes absorbed / min
5.53
SApM (lower is better)
Net striking
+2.36
SLpM − SApM
Strike defense
57%
Opponent strikes evaded
Takedowns / 15 min
1.40
TD_Avg
Takedown defense
70%
Opponent TDs stuffed
Sub attempts / 15 min
0.70
Sub_Avg
High-volume striker

Head-to-Head Comparison

Search for a fighter to compare side-by-side

Career statistics

Career Averages (per fight)

7.0
Sig. Strikes
2.7
Takedowns
1.1
Sub Attempts

How They Win

KO/TKO3 (50%)
Submission1 (17%)
Decision0 (0%)

Loss Vulnerability

KO/TKO0 (0%)
Submission1 (50%)
Decision0 (0%)

Betting Profile

Win rate when fighting as favorite vs underdog

As Favorite

80%

4W – 1L in 5 fights

As Underdog

100%

2W – 0L in 2 fights

ELO analysis

ELO Trajectory

Skill rating evolution — hover dots for fight details

Cont.Mid1490151015301520Feb 21Jun 21Oct 21Feb 22Mar 23Dec 23Aug 24Mar 26
WinLossDrawCurrent ELO8 fights

Elo Changes

Rating gained or lost in each fight

def. Gabriella Fernandes
Mar 28, 2026
+16.21520
def. Luana Santos
Aug 17, 2024
+4.91504
lost to Ariane da Silva
Dec 16, 2023
-3.21499
lost to Jennifer Maia
Mar 18, 2023
-2.51503
def. Roxanne Modafferi
Feb 12, 2022
+2.01505
def. Antonina Shevchenko
Oct 2, 2021
+1.31503
def. Lara Procopio
Jun 19, 2021
+1.01502
def. Shana Dobson
Feb 20, 2021
+0.81501

Division ELO Rankings

Women's Flyweight · Active fighters ranked by recency-weighted skill

#1Natalia Silva
1550
↗
#2Carli Judice
1542
↗
#3Erin Blanchfield
1529
↗
#4Valentina Shevchenko
1526
↗
#5Manon Fiorot
1522
#6Casey O'Neill
1520
↗
#7Veronica Hardy
1520
#8Maycee Barber
1514
#9Miranda Maverick
1513
#10Alexa Grasso
1512

Showing top 10 of 24 active fighters · Full rankings →

Professional fight history

Fight History (8 fights)

vs Gabriella Fernandes
UFC Fight Night: Adesanya vs. Pyfer · Mar 28, 2026
Women's Flyweight
Win
KO/TKO · Rnd 1View Analysis →
vs Luana Santos
UFC 305: Du Plessis vs. Adesanya · Aug 17, 2024
Women's Flyweight
Win
U-DEC · Rnd 3View Analysis →
vs Ariane da Silva
UFC 296: Edwards vs. Covington · Dec 16, 2023
Women's Flyweight
Loss
SUB · Rnd 2View Analysis →
vs Jennifer Maia
UFC 286: Edwards vs. Usman 3 · Mar 18, 2023
Women's Flyweight
Loss
U-DEC · Rnd 3View Analysis →
vs Roxanne Modafferi
UFC 271: Adesanya vs. Whittaker 2 · Feb 12, 2022
Women's Flyweight
Win
S-DEC · Rnd 3View Analysis →
vs Antonina Shevchenko
UFC Fight Night: Santos vs. Walker · Oct 2, 2021
Women's Flyweight
Win
KO/TKO · Rnd 2View Analysis →
vs Lara Procopio
UFC Fight Night: Jung vs. Ige · Jun 19, 2021
Women's Flyweight
Win
SUB · Rnd 3View Analysis →
vs Shana Dobson
UFC Fight Night: Blaydes vs. Lewis · Feb 20, 2021
Women's Flyweight
Win
KO/TKOView Analysis →