| Australia (4) |
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| Barty, Ashleigh | | Gavrilova, Daria | | Stosur, Samantha | | Tomljanovic, Ajla |
| | Belarús (1) |
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| Sasnovich, Aliaksandra |
| | Bélgica (2) |
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| Flipkens, Kirsten | | Wickmayer, Yanina |
| | Brasil (1) |
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| Haddad Maia, Beatriz |
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| Bulgaria (1) |
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| Pironkova, Tsvetana |
| | Canadá (1) |
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| Bouchard, Eugenie |
| | China (4) |
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| Duan, Ying-Ying | | Peng, Shuai | | Wang, Qiang | | Zhang, Shuai |
| | Croacia (3) |
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| Konjuh, Ana | | Lucic-Baroni, Mirjana | | Vekic, Donna |
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| República Checa (5) |
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| Pliskova, Karolina | | Pliskova, Kristyna | | Safarova, Lucie | | Siniakova, Katerina | | Strycova, Barbora |
| | Dinamarca (1) |
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| Wozniacki, Caroline |
| | Estonia (1) |
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| Kontaveit, Anett |
| | Francia (5) |
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| Cornet, Alizé | | Dodin, Oceane | | Garcia, Caroline | | Mladenovic, Kristina | | Parmentier, Pauline |
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| Alemania (6) |
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| Beck, Annika | | Goerges, Julia | | Kerber, Angelique | | Petkovic, Andrea | | Siegemund, Laura | | Witthoeft, Carina |
| | | Italia (2) |
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| Errani, Sara | | Vinci, Roberta |
| | Japón (4) |
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| Doi, Misaki | | Nara, Kurumi | | Osaka, Naomi | | Ozaki, Risa |
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| Kazajstán (2) |
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| Putintseva, Yulia | | Shvedova, Yaroslava |
| | Letonia (2) |
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| Ostapenko, Jelena | | Sevastova, Anastasija |
| | Luxemburgo (1) |
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| Minella, Mandy |
| | Montenegro (1) |
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| Kovinic, Danka |
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| Países Bajos (1) |
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| Bertens, Kiki |
| | Nueva Zelanda (1) |
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| Erakovic, Marina |
| | Paraguay (1) |
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| Cepede Royg, Veronica |
| | Polonia (2) |
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| Linette, Magda | | Radwanska, Agnieszka |
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| Puerto Rico (1) |
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| Puig, Monica |
| | Rumania (5) |
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| Begu, Irina-Camelia | | Cirstea, Sorana | | Halep, Simona | | Niculescu, Monica | | Tig, Patricia Maria |
| | Rusia (6) |
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| Kasatkina, Daria | | Kuznetsova, Svetlana | | Makarova, Ekaterina | | Pavlyuchenkova, Anastasia | | Vesnina, Elena | | Vikhlyantseva, Natalia |
| | Serbia (1) |
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| Jankovic, Jelena |
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| Eslovaquia (3) |
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| Cepelova, Jana | | Cibulkova, Dominika | | Kucova, Kristina |
| | España (4) |
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| Arruabarrena, Lara | | Badosa Gibert, Paula | | Muguruza, Garbiñe | | Suárez Navarro, Carla |
| | Suecia (1) |
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| Larsson, Johanna |
| | Suiza (2) |
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| Bencic, Belinda | | Golubic, Viktorija |
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| Ucrania (3) |
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| Bondarenko, Kateryna | | Svitolina, Elina | | Tsurenko, Lesia |
| | Reino Unido (2) |
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| Konta, Johanna | | Watson, Heather |
| | Estados Unidos (16) |
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| Anisimova, Amanda | | Bellis, CiCi | | Brady, Jennifer | | Brengle, Madison | | Chirico, Louisa | | Davis, Lauren | | Gibbs, Nicole | | Keys, Madison | | Lepchenko, Varvara | | Mattek-Sands, Bethanie | | McHale, Christina | | Riske, Alison | | Rogers, Shelby | | Townsend, Taylor | | Vandeweghe, Coco | | Williams, Venus |
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