| Austria (1) |
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| Ofner, Sebastian |
| | Belgium (2) |
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| Bergs, Zizou | | Uytvanck, Alison Van |
| | Chile (2) |
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| Jarry, Nicolas | | Tabilo, Alejandro |
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| | Czech Republic (1) |
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| Krejcikova, Barbora |
| | | France (5) |
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| Atmane, Terence | | Garcia, Caroline | | Gasquet, Richard | | Moutet, Corentin | | Muller, Alexandre |
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| Germany (4) |
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| Lys, Eva | | Maria, Tatjana | | Niemeier, Jule | | Siegemund, Laura |
| | | Latvia (1) |
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| Ostapenko, Jelena |
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| Jong, Jesper de |
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| Cristian, Jaqueline |
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| Sramkova, Rebecca |
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| Zidansek, Tamara |
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| Golubic, Viktorija | | Wawrinka, Stan |
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| Draper, Jack | | Murray, Andy |
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| Anisimova, Amanda | | Kenin, Sofia | | Wolf, J.J. |
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