| Champ: |  Madison Brengle |
| Runner: | Stefanie Vögele |
| Score: | 6–1, 3–6, 6–2 |
| Before Name: | Oracle Challenger Series – Newport beach– Women's Singles |
| After Name: | Oracle Challenger Series – Newport beach– Women's Singles |
See main article: article and 2020 Oracle Challenger Series – Newport Beach.
Bianca Andreescu was the defending champion,[1] but chose not to participate this year.
Madison Brengle won the title, defeating Stefanie Vögele in the final, 6–1, 3–6, 6–2.
All seeds received a bye into the second round.