Rachael Ostovich (born February 25, 1991)[2] is an American mixed martial artist who competes in the Flyweight division.

Ostovich attended Moanalua High School and competed in cheerleading, judo, and wrestling.

Ostovich originally began training for MMA because she wanted to continue competing in sports after high school.

[14] In her fourth fight for the promotion, Ostovich faced Christine Ferea on January 14, 2017, at Invicta FC 21.

[15][16] She lost the fight via TKO in the third round, bringing her Invicta FC record to 2–2 before joining The Ultimate Fighter.

[22] Ostovich faced Montana De La Rosa on July 6, 2018, at The Ultimate Fighter 27 Finale.

[31] However, Ostovich was removed from the bout due to testing positive for ostarine, and she was replaced by Priscila Cachoeira.

[32] On June 18, it was announced that Ostovich had accepted a USADA suspension for one year due to testing positive for ostarine, retroactive to January 3, 2020.

[37] On April 27, 2021, Ostovich and Bare Knuckle Fighting Championship both announced that she had signed with the organization and is expected to make her debut in July.

[38] On May 27, 2021, it was announced that Ostovich is scheduled to face Paige VanZant – whom she lost to in mixed martial arts at UFC Fight Night: Cejudo vs. Dillashaw – at BKFC 19 on July 23, 2021.

[41] On November 18, 2018, Ostovich was assaulted in her hometown of Honolulu, leaving her with a broken orbital bone.

[43] A nine-minute video taken by a witness and obtained by Hawaii News Now captures Berdon repeatedly saying "I’m going to murder you.

[44][45][46] After a night out with family, (Arnold Berdon) punched me repeatedly on the head, face, ribs, making me fall to the ground.