2018 RBC Pro Challenge – Singles

Kristie Ahn was the defending champion, but retired in the first round against Kurumi Nara.

Whitney Osuigwe won the title, defeating Beatriz Haddad Maia in the final, 6–3, 6–4.

Seeds
• # Belinda Bencic (semifinals)

• # 🇺🇸 Madison Brengle (second round)

• # 🇭🇺 Fanny Stollár (first round)

• # 🇺🇸 Jessica Pegula (first round)

• # 🇺🇸 Claire Liu (second round)

• # 🇺🇸 Nicole Gibbs (second round)

• # 🇺🇸 Kristie Ahn (first round, retired)

• # 🇺🇸 Christina McHale (second round)