1989 Volvo Tennis San Francisco – Singles

Michael Chang was the defending champion, but lost in the quarterfinals to Kelly Evernden.

Brad Gilbert won the title, by defeating Anders Järryd 7–5, 6–2 in the final.

Seeds
• # (n/a)

• # 🇺🇸 Michael Chang (quarterfinals)

• # 🇺🇸 Brad Gilbert (champion)

• # 🇺🇸 Tim Mayotte (second round)

• # 🇺🇸 Kevin Curren (semifinals)

• # Christo van Rensburg (quarterfinals)

• # 🇦🇺 John Fitzgerald (first round)

• # Slobodan Živojinović (second round)