In June 2014, it was announced that Hill was one of the fighters selected by the UFC to appear on. She faced Carla Esparza in the preliminary round and lost via submission in the first round.
Ultimate Fighting Championship
Hill's first fight after The Ultimate Fighter was against Emily Kagan at on December 12, 2014. Tecia Torres fought at UFC 188 and defeated Hill. Hill faced Rose Namajunas at UFC 192 on October 3, 2015. She lost the fight by submission in the first round. She was subsequently released from the promotion.
On November 17, 2015 Hill announced on her official Facebook page that she signed with Invicta FC. She made her debut for the promotion at Invicta FC 15 on January 16, 2016, and successfully notched a first round TKO victory over Alida Gray. Hill returned less than two months later on March 11, 2016, and knocked out former strawweight title challenger Stephanie Eggink in the second round, earning her first Performance of the Night bonus as a result of the finish. Hill made another quick turnaround to face undefeated strawweight champion Lívia Renata Souza for the title at Invicta FC 17 on May 7, 2016. She won the fight via split decision to become the new Invicta FC Strawweight champion.
UFC return
Hill and Jéssica Andrade were briefly linked to a bout at UFC 207. However, the fight never materialized for that event because of a rule in the UFC's anti-doping policy with USADA. Subsequently, Andrade was removed from that card with the pairing left intact and rescheduled to take place at on February 4, 2017. Andrade won the fight by unanimous decision. In addition, both participants were awarded Fight of the Night honors. Hill faced Ashley Yoder on July 7, 2017 at. She won the fight by unanimous decision. Hill faced Nina Ansaroff at on November 11, 2017 in Norfolk, Virginia. She lost the fight via unanimous decision. Hill faced Maryna Moroz at on February 24, 2018 at Amway Center in Orlando, Florida. She won the fight by unanimous decision. Hill was scheduled to face Alexa Grasso on August 25, 2018 at UFC Fight Night 135. However, Grasso was pulled out from the bout on July 19, 2018 due to knee injury and she was replaced by Cortney Casey. She lost the fight via split decision. Hill faced Randa Markos on March 23, 2019 at. She lost the fight via a submission in round one. Hill replaced an injured Jessica Penne against Jodie Esquibel on April 27, 2019 at. She won the fight by unanimous decision. Hill faced Yan Xiaonan, replacing injured Felice Herrig, on June 8, 2019 at UFC 238. She lost the fight by unanimous decision. Hill was scheduled to face Istela Nunes on September 21, 2019 at UFC on ESPN+ 17. However, on August 12, 2019, it was reported that Nunes was removed from the card due to a failed drug test, and she was replaced by Ariane Carnelossi. Hill won the fight via TKO due to a doctor's stoppage in the third round after an elbow she threw cut Carnelossi over the left eye and rendered her unable to continue. Hill faced Hannah Cifers, replacing Brianna Van Buren on January 25, 2020 at UFC Fight Night 166. She won the fight via technical knockout in round two. Hill accepted a short notice fight once again, replacing Hannah Goldy to fight Loma Lookboonmee at on February 22, 2020. She won the fight via unanimous decision. Hill faced Cláudia Gadelha on May 16, 2020 at. She lost the bout via a controversial split decision. 13 of 17 media outlets scored the fight in favor of Hill. Hill is scheduled to meet Michelle Waterson on August 22, 2020 at UFC Fight Night 175.
Championships and accomplishments
Invicta FC
*Invicta FC Strawweight Champion
*Performance of the Night vs. Alida Gray, Stephanie Eggink, and Lívia Renata Souza
Ultimate Fighting Championship
*Most fights in UFC Women's Strawweight division history
*Most losses in UFC Women's Strawweight division history
*Fight of the Night vs. Jéssica Andrade
*Six consecutive fights in the least time in UFC history