Angelique Kerber was the defending champion and successfully defended her title, defeating Laura Siegemund in the final, 6–4, 6–0.
The top four seeds received a bye into the second round.
Agnieszka Radwańska (semifinals)
Angelique Kerber (champion)
Garbiñe Muguruza (quarterfinals)
Simona Halep (second round)
Petra Kvitová (semifinals)
Roberta Vinci (quarterfinals) Carla Suárez Navarro (quarterfinals) Lucie Šafářová (first round) Camila Giorgi (qualifying competition, lucky loser)
Madison Brengle (first round) Laura Siegemund (qualified)
Ana Konjuh (qualifying competition) Carina Witthöft (qualified) Kristýna Plíšková (qualifying competition)
Polona Hercog (qualifying competition)
Naomi Osaka (first round)