Namajunas won the fight via close but unanimous decision.
Rose Namajunas will celebrate 30th birthday on a Wednesday 29th of June 2022.
After some back-and-forth striking exchanges on the feet, Namajunas took Hill down with a trip off a punch.
As Hill stood up, Namajunas quickly secured a rear-naked choke, submitting Hill in the first round.
Prior to the fight, Ansaroff missed weight by 4 pounds and was fined 20 percent of her fight purse.
Kowalkiewicz defeated Namajunas via split decision.