2019 Silicon Valley Classic – Singles

Mihaela Buzărnescu was the defending champion, but lost to Daria Kasatkina in the first round.

Zheng Saisai won her first WTA singles title, defeating Aryna Sabalenka in the final, 6–3, 7–6(7–3).

Seeds
The top four seeds received a bye into the second round. • #🇺🇦 Elina Svitolina (quarterfinals)

• #🇧🇾 Aryna Sabalenka (final)

• #🇧🇪 Elise Mertens (second round)

• #🇺🇸 Amanda Anisimova (quarterfinals)

• # Donna Vekić (semifinals)

• #🇪🇸 Carla Suárez Navarro (quarterfinals)

• # Maria Sakkari (semifinals)

• #🇺🇸 Danielle Collins (second round)

Seeds
• #🇭🇺 Tímea Babos (qualified)

• #🇨🇳 Wang Xiyu (qualifying competition)

• #🇦🇺 Priscilla Hon (qualifying competition)

• #🇺🇸 Danielle Lao (qualifying competition)

• #🇺🇸 Kristie Ahn (qualified)

• # Liang En-shuo (qualifying competition, retired)

• #🇷🇸 Jovana Jakšić (first round)

• #🇫🇷 Harmony Tan (qualified)

Qualifiers
• # 🇭🇺 Tímea Babos

• # 🇯🇵 Mayo Hibi

• # 🇫🇷 Harmony Tan

• # 🇺🇸 Kristie Ahn