CASEY O'NEILL

Born in Scotland and raised in Australia, the flyweight competitor began her martial arts journey with a background in kickboxing. Her transition into professional fighting involved training periods in both Australia and Thailand. After gaining experience in organizations like Eternal MMA, she signed with the UFC in 2021. Throughout her tenure, she has maintained an aggressive approach inside the cage and secured multiple performance bonuses, including notable victories over opponents such as Roxanne Modafferi.

Entering the event with a professional mark of 12-2-0, she represents the Fight Ready team. Her current trajectory shows three consecutive victories, starting with a unanimous decision against Luana Santos in August 2024. She followed this by knocking out Gabriella Fernandes in March 2026 and forcing a submission from Eduarda Moura that September. These successes follow earlier setbacks against Jennifer Maia and Ariane Lipski.