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Personal Information
| Full Name | Casey Cameron O'Neill |
| Date of Birth | October 7, 1997 |
| Age | 25 |
| Nationality | Australian/ British |
| Height | 5 ft 6 in (1.68 m) |
| Weight | 125 lb (57 kg) |
| Nickname | King |
Casey O'Neill: A Brief Biography
Casey Cameron O'Neill is a mixed martial artist who was born in Scotland but currently competes in the Flyweight division of the Ultimate Fighting Championship (UFC) as an Australian fighter. She is currently ranked #12 in the UFC women's flyweight rankings.
Latest News Update for Casey O’Neill
O’Neill suffered her first loss in her professional MMA career at UFC 286 against Jennifer Maia. Maia was declared the winner of the bout via a unanimous decision.
Casey O’Neill Facts
| Birth Place | Irvine, Scotland, United Kingdom |
| Father’s Name | Cam O’Neill |
| Star Sign | Libra |
| Last Fight Earnings | $70,000 |
| Age | 25 |
| MMA Debut | 2019 |
| MMA Record | 9-0 |
| Achievements | Eternal MMA Strawweight Champion |
| Social Media | Instagram, Twitter |
Early Life and Career
Casey Cameron O'Neill was born in Irvine, Scotland, and trained in kickboxing from the age of four under her father, a professional kickboxer. At 10, she moved with her family to the Gold Coast, Australia, and began training in Brazilian jiu-jitsu at 13.
She competed in her first amateur MMA fight at 15 but was defeated. She trained for two years and returned to the amateur circuit at 19, winning five consecutive fights before turning professional at 21.
In 2019, O'Neill moved to Phuket, Thailand, to train at Tiger Muay Thai gym. She won her professional debut at the Eternal MMA 43 event and secured three more wins domestically before winning her first fight overseas at the UAE Warriors 13 event in September 2020.
Casey O’Neill’s Career in UFC
Casey Cameron O'Neill made her UFC debut on 20 February 2021 at UFC Fight Night: Blaydes vs. Lewis and won with a second-round knockout victory over Shana Dobson. She then faced Lara Procópio on 19 June 2021 at UFC on ESPN: The Korean Zombie vs. Ige, winning the bout in the third round via rear-naked choke.
On 2 October 2021, O'Neill faced Antonina Shevchenko at UFC Fight Night: Santos vs. Walker and won via technical knockout in the second round, earning the Performance of the Night award.
She faced Roxanne Modafferi on 12 February 2022 at UFC 271, winning the fight via split decision, although one judge's scorecard received criticism. O'Neill was scheduled to face Jessica Eye on 2 July 2022 at UFC 276, but withdrew due to a torn ACL and was replaced by Maycee Barber.
She lost her fight against Jennifer Maia on 18 March 2023 at UFC 286 via a unanimous decision.
Casey O’Neill Record
| Result | Record | Opponent | Method | Event | Date | Round | Time | Location |
| Loss | 9-1 | Jennifer Maia | Decision (unanimous) | UFC 286 | 18 March 2023 | 3 | 5:00 | London, England |
| Win | 9–0 | Roxanne Modafferi | Decision (split) | UFC 271 | 12 February 2022 | 3 | 5:00 | Houston, Texas, United States |
| Win | 8–0 | Antonina Shevchenko | TKO (punches) | UFC Fight Night: Santos vs. Walker | 2 October 2021 | 2 | 4:47 | Las Vegas, Nevada, United States |
| Win | 7–0 | Lara Procópio | Technical Submission (rear-naked choke) | UFC on ESPN: The Korean Zombie vs. Ige | 19 June 2021 | 3 | 2:54 | Las Vegas, Nevada, United States |
| Win | 6–0 | Shana Dobson | TKO (punches) | UFC Fight Night: Blaydes vs. Lewis | 20 February 2021 | 2 | 3:41 | Las Vegas, Nevada, United States |
| Win | 5–0 | Christina Stelliou | KO (punches) | UAE Warriors 13 | 25 September 2020 | 2 | 2:12 | Abu Dhabi, United Arab Emirates |
| Win | 4–0 | Caitlin McEwen | Decision (unanimous) | Eternal MMA 51 | 29 February 2020 | 3 | 5:00 | Perth, Australia |
| Win | 3–0 | Miki Motono | Decision (unanimous) | Eternal MMA 48 | 4 October 2019 | 5 | 5:00 | Melbourne, Australia |
| Win | 2–0 | Jada Ketley | Submission (rear-naked choke) | Eternal MMA 46 | 27 July 2019 | 1 | 2:32 | Melbourne, Australia |
| Win | 1–0 | Amira Hafizović | Decision (unanimous) | Eternal MMA 43 | 5 April 2019 | 5 | 5:00 | Adelaide, Australia |
FAQs on Casey O’Neill
What is Casey O’Neill’s nickname?
Casey O’Neill’s nickname is “King”.
What division does Casey O’Neill compete in?
Casey O’Neill competes in the Flyweight division in the Ultimate Fighting Championship (UFC).
What is Casey O’Neill’s MMA record?
Casey O’Neill holds an impressive record of 9 wins and 1 loss in her professional MMA career.
Last Updated On 19th March 2023
