2018 Silicon Valley Classic

The 2018 Silicon Valley Classic (also known as the Mubadala Silicon Valley Classic for sponsorship reasons) was a professional women's tennis tournament played on hard courts. It was the 47th edition of the tournament, and part of the WTA Premier tournaments of the 2018 WTA Tour. It took place between 30 July and 5 August 2018 and was the first time the tournament is held in San Jose, California, following a move from Stanford. It was the first women's event on the 2018 US Open Series.

Seeds

 * 1 Rankings are as of July 23, 2018.

Other entrants
The following players received wildcards into the singles main draw:
 * 🇺🇸 Ashley Kratzer
 * 🇺🇸 Claire Liu
 * 🇪🇸 Garbiñe Muguruza
 * 🇺🇸 Venus Williams

The following player received entry using a protected ranking:
 * 🇺🇸 Serena Williams

The following players received entry from the qualifying draw:
 * 🇺🇸 Amanda Anisimova
 * Verónica Cepede Royg
 * 🇪🇸 Georgina García Pérez
 * 🇺🇸 Danielle Lao

The following players received entry as lucky losers:
 * 🇷🇺 Anna Blinkova
 * 🇵🇱 Magdalena Fręch

Withdrawals

 * 🇺🇸 Catherine Bellis → replaced by 🇺🇦 Kateryna Bondarenko
 * Polona Hercog → replaced by 🇺🇸 Sofia Kenin
 * 🇺🇸 Madison Keys → replaced by 🇵🇱 Magdalena Fręch
 * 🇪🇸 Garbiñe Muguruza → replaced by 🇷🇺 Anna Blinkova
 * 🇷🇺 Anastasia Pavlyuchenkova → replaced by 🇬🇧 Heather Watson
 * 🇷🇺 Maria Sharapova → replaced by 🇧🇾 Victoria Azarenka
 * 🇺🇸 CoCo Vandeweghe → replaced by 🇺🇸 Christina McHale

Retirements

 * 🇧🇾 Victoria Azarenka

Seeds

 * 1 Rankings are as of July 23, 2018.

Other entrants
The following pair received a wildcard into the main draw:
 * 🇺🇸 Tamara Culibrk / 🇫🇷 Sybille Gauvain

Withdrawals

 * During the tournament
 * 🇧🇾 Aryna Sabalenka

Singles

 * 🇷🇴 Mihaela Buzărnescu defeated Maria Sakkari, 6–1, 6–0

Doubles

 * Latisha Chan / 🇨🇿 Květa Peschke defeated 🇺🇦 Lyudmyla Kichenok / 🇺🇦 Nadiia Kichenok, 6–4, 6–1