Casey O’Neill Calls Out Maycee Barber

Casey O’Neill publicly called for a fight with Maycee Barber after her UFC 331 appearance on September 19, 2026. O’Neill said she had been pursuing the matchup and challenged Barber while discussing her next step in the women’s flyweight division. The comments establish a direct callout but do not confirm that the UFC has booked the fight. No fight result involving Barber is included here.