Holly Holm
In November 2020, Shields had signed a three-year contract with Professional Fighters League and was expected to make her mixed martial arts debut in 2021. Since Shields first announced that her MMA debut, she has also begun training in Brazilian Jiu-Jitsu and has gone to train under IBJJF no gi World Champion Roberto Alencar, alongside Holly Holm. She also started training at JacksonWink MMA in late 2020.