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.[1] It was the first women's event on the 2018 US Open Series.
| Event | W | F | SF | QF | Round of 16 | Round of 32 | width=85 | Q | width=85 | Q2 | width=85 | Q1 |
| Women's singles | 470 | 305 | 185 | 100 | 55 | 1 | 25 | 13 | 1 | |||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Women's doubles | 1 |
| width=130 bgcolor=dfe2e9 | Event | width=80 bgcolor=lime | W | width=85 bgcolor=thistle | F | width=85 bgcolor=ffff00 | SF | width=85 bgcolor=ffebcd | QF | width=85 bgcolor=afeeee | Round of 16 | width=85 bgcolor=afeeee | Round of 32 | width=85 | Q2 | width=85 | Q1 |
| style=background:#ededed | Women's singles | $128,100 | $68,280 | $37,330 | $21,330 | $10,670 | $6,990 | $3,225 | $1,810 | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| style=background:#ededed | Women's doubles | $40,300 | $21,330 | $11,735 | $5,975 | $3,240 |
| Country | Player | Rank1 | Seed | |
|---|---|---|---|---|
 Spain | ||||
| Venus Williams | 14 | 3 | ||
 Belgium | Elise Mertens | 15 | 4 | |
 Romania | Mihaela Buzărnescu | 24 | 5 | |
| Serena Williams | 27 | 6 | ||
 China | Zhang Shuai | 32 | 7 | |
 Hungary | Tímea Babos | 39 | 8 |
The following players received wildcards into the singles main draw:
The following player received entry using a protected ranking:
Serena WilliamsThe following players received entry from the qualifying draw:
The following players received entry as lucky losers:
Catherine Bellis → replaced by 
Kateryna Bondarenko 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| Country | Player | Country | Player | Rank1 | Seed | |
|---|---|---|---|---|---|---|
| Latisha Chan |  Czech Republic | Květa Peschke | 17 | 1 | ||
| Romania | Mihaela Buzărnescu | United Kingdom | Heather Watson | 80 | 2 | |
| Ukraine | Lyudmyla Kichenok | Ukraine | Nadiia Kichenok | 84 | 3 | |
 Japan | Miyu Kato | Japan | Makoto Ninomiya | 92 | 4 |
The following pair received a wildcard into the main draw:
See main article: article and 2018 Silicon Valley Classic – Singles.
Mihaela Buzărnescu defeated Maria Sakkari, 6–1, 6–0See main article: article and 2018 Silicon Valley Classic – Doubles.
Květa Peschke defeated Lyudmyla Kichenok / Nadiia Kichenok, 6–4, 6–1