| Argentina (1) |
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| Schwartzman, Diego |
| | Australia (2) |
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| Barty, Ashleigh | | Millman, John |
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| | Czech Republic (3) |
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| Kvitova, Petra | | Siniakova, Katerina | | Strycova, Barbora |
| | France (2) |
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| Humbert, Ugo | | Moutet, Corentin |
| | Germany (1) |
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| Struff, Jan-Lennard |
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| Fognini, Fabio | | Giustino, Lorenzo |
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| Rus, Arantxa |
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| Cirstea, Sorana |
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| Djokovic, Novak | | Lajovic, Dusan |
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| Harris, Lloyd |
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| Spain (2) |
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| Edmund, Kyle |
| | United States (5) |
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| Gauff, Coco | | Keys, Madison | | Opelka, Reilly | | Stephens, Sloane | | Williams, Venus |
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