Play starts at 10am
Lara ARRUABARRENA (ESP) v Lesia TSURENKO (UKR) 
Misaki DOI (JPN) v Kayla DAY (USA)
[Q] Marina ERAKOVIC (NZL) v Ana KONJUH (CRO) 
Natalia VIKHLYANTSEVA (RUS) v [Q] Danielle LAO (USA)
Not before 7pm
[WC] Maria SHARAPOVA (RUS) v Jennifer BRADY (USA)
Nicole GIBBS (USA) v [WC] Claire LIU (USA)
Play starts at 11am
Lyudmyla KICHENOK (UKR) / Nadiia KICHENOK (UKR) v Gabriela DABROWSKI (CAN) / XU Yifan (CHN) 
Eva HRDINOVA (CZE) / Asia MUHAMMAD (USA) v Abigail SPEARS (USA) / CoCo VANDEWEGHE (USA) 
Top seeds Garbiñe Muguruza, Petra Kvitova, Madison Keys and Anastasia Pavlyuchenkova have all received first-round byes.
Jennifer Brady faces the reigning Wimbledon junior champion Claire Liu.
Johanna Konta is the current Stanford singles champion; she beat former winner Venus Williams in 2016, 7-5, 5-7, 6-2. However, she will not be defending her title this year.
Other former champions include Billie Jean King, Chris Evert, Martina Navratilova, Andrea Jaeger, Monica Seles, Martina Hingis, Lindsay Davenport, Serena Williams and Kim Clijsters.