| A U.S. Open Series event |
|---|
| Monday |
| At The Taube Family Tennis Stadium |
| Stanford, California |
| Purse: $710,900 (Premier) |
| Surface: Hard-Outdoor |
| Singles |
| First Round |
Lesia Tsurenko (7), Ukraine, def. Lara Arruabarrena, Spain, 6-3, 6-3.
Kayla Day, United States, def. Misaki Doi, Japan, 6-4, 6-2.
Ana Konjuh (5), Croatia, def. Marina Erakovic, New Zealand, 6-3, 1-0 retired.
| Doubles |
|---|
| First Round |
Lyudmyla and Nadiia Kichenok, Ukraine, def. Gabriela Dabrowski, Canada, and Xu Yifan (2), China, 6-4, 6-4.
Abigail Spears and CoCo Vandeweghe (3), United States, def. Eva Hrdinova, Czech Republic, and Asia Muhammad, United States, 6-3, 6-0.
