| Champ: |  Bianca Andreescu |
| Runner: |  Jessica Pegula |
| Score: | 0–6, 6–4, 6–2 |
| Edition: | 2nd |
| 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 2019 Oracle Challenger Series – Newport Beach.
Danielle Collins was the defending champion, but chose not to participate as she was still competing at the Australian Open.
Bianca Andreescu won her first WTA 125K series title, defeating Jessica Pegula in the final, 0–6, 6–4, 6–2.
All seeds received a bye into the second round.