| Australië (5) |
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| Barty, Ashleigh | | Gavrilova, Daria | | Perez, Ellen | | Rogowska, Olivia | | Stosur, Samantha |
| | Kroatië (1) |
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| Lucic-Baroni, Mirjana |
| | Tsjechië (3) |
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| Kvitova, Petra | | Safarova, Lucie | | Strycova, Barbora |
| | Frankrijk (1) |
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| Mladenovic, Kristina |
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| Duitsland (2) |
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| Kerber, Angelique | | Witthoeft, Carina |
| | | Letland (2) |
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| Ostapenko, Jelena | | Sevastova, Anastasija |
| | Nederland (1) |
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| Bertens, Kiki |
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| Paraguay (1) |
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| Cepede Royg, Veronica |
| | Polen (1) |
|---|
| Radwanska, Agnieszka |
| | Rusland (3) |
|---|
| Kasatkina, Daria | | Makarova, Ekaterina | | Vesnina, Elena |
| | Slowakije (2) |
|---|
| Cibulkova, Dominika | | Rybarikova, Magdalena |
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| Spanje (2) |
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| Arruabarrena, Lara | | Muguruza, Garbiñe |
| | Verenigd Koninkrijk (1) |
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| Konta, Johanna |
| | Verenigde Staten (4) |
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| Ahn, Kristie | | Bellis, CiCi | | Stephens, Sloane | | Williams, Venus |
|