1. Naomi Osaka.
2. Garbiñe Muguruza.
3. Maria Sharapova.
4. Camila Giorgi.
5. Belinda Bencic.
6. Anett Kontaveit.
7. Catherine Bellis.
8. Sloane Stephens.
9. Maria Sakkari.
10. Ekaterina Alexandrova.
Crédits photos : Kyodo News (Osaka) ; Taiwan News (Muguruza) ; GotCeleb (Sharapova) ; UbiTennis (Giorgi) ; Dita Alangkara - Keystone (Bencic) ; Wta Tennis (Kontaveit) ; Tucson.com (Bellis) ; GotCeleb (Stephens) ; Tumbral (Sakkari) ; AusOpen (Alexandrova).