2024 San Diego Open – Singles

Katie Boulter defeated Marta Kostyuk in the final, 5–7, 6–2, 6–2 to win the singles tennis title at the 2024 San Diego Open. It was her second WTA Tour title.

Barbora Krejčíková was the reigning champion, but chose not to compete this year.

Seeds
The top four seeds received a bye into the second round. • #🇺🇸 Jessica Pegula (semifinals)

• #🇧🇷 Beatriz Haddad Maia (second round)

• #🇺🇸 Emma Navarro (semifinals)

• # Anastasia Pavlyuchenkova (quarterfinals)

• #🇺🇦 Dayana Yastremska (second round)

• #🇺🇦 Marta Kostyuk (final)

• # Donna Vekić (quarterfinals)

• #🇨🇦 Leylah Fernandez (first round, retired)

Seeds
• # 🇬🇧 Jodie Burrage (first round)

• # 🇺🇸 Kayla Day (qualifying competition)

• # Maria Timofeeva (first round, retired)

• # 🇺🇸 Claire Liu (qualifying competition)

• # 🇯🇵 Mai Hontama (qualified)

• # 🇨🇿 Linda Fruhvirtová (qualifying competition)

• # 🇩🇪 Jule Niemeier (qualified)

• # 🇸🇰 Rebecca Šramková (qualifying competition)

• # 🇭🇺 Dalma Gálfi (qualifying competition)

• # 🇦🇺 Daria Saville (qualified)

• # 🇫🇷 Elsa Jacquemot (qualifying competition)

• # 🇺🇸 Ann Li (qualified)

Qualifiers
• # Marina Melnikova

• # 🇺🇸 Ann Li

• # 🇨🇦 Marina Stakusic

• # 🇩🇪 Jule Niemeier

• # 🇯🇵 Mai Hontama

• # 🇦🇺 Daria Saville