2018 Moscow River Cup – Singles

This was the first edition of the tournament.

Olga Danilović won her first WTA Tour title, defeating Anastasia Potapova in the final, 7–5, 6–7(1–7), 6–4. Danilović became the first player born after 2000 to win a WTA singles title, and the first lucky loser to win a singles title since Andrea Jaeger in 1980. This was the first WTA Tour final between two players under 18 since Tatiana Golovin and Nicole Vaidišová played in the final of the 2005 AIG Japan Open Tennis Championships.

Seeds
• #🇩🇪 Julia Görges (quarterfinals)

• #🇷🇺 Daria Kasatkina (second round)

• # Anastasija Sevastova (quarterfinals, withdrew)

• #🇨🇿 Kateřina Siniaková (first round)

• #🇧🇾 Aliaksandra Sasnovich (semifinals)

• #🇷🇴 Irina-Camelia Begu (withdrew)

• #🇫🇷 Alizé Cornet (first round)

• #🇪🇪 Kaia Kanepi (second round)

Seeds
• # 🇷🇺 Anna Kalinskaya (moved to main draw)

• # 🇷🇺 Veronika Kudermetova (qualifying competition)

• # 🇮🇹 Deborah Chiesa (qualified)

• # 🇷🇴 Irina Bara (qualifying competition, lucky loser)

• # 🇧🇪 Maryna Zanevska (withdrew)

• # 🇪🇸 Paula Badosa Gibert (qualified)

• # Valentini Grammatikopoulou (qualified)

• # 🇷🇺 Valentyna Ivakhnenko (qualified)

• # 🇷🇴 Elena-Gabriela Ruse (first round)

• # 🇮🇹 Martina Trevisan (qualified)

• # 🇷🇸 Dejana Radanović (first round)

• # 🇷🇸 Olga Danilović (qualifying competition, lucky loser)

Qualifiers
• # Valentini Grammatikopoulou

• # 🇷🇺 Valentyna Ivakhnenko

• # 🇮🇹 Deborah Chiesa

• # 🇷🇺 Varvara Flink

• # 🇮🇹 Martina Trevisan

• # 🇪🇸 Paula Badosa Gibert

Lucky losers
• # 🇷🇴 Irina Bara

• # 🇷🇸 Olga Danilović