| Argentina (1) |
|---|
| Del Potro, Juan Martin |
| | Australia (2) |
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| Millman, John | | Tomljanovic, Ajla |
| | Belarus (2) |
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| Azarenka, Victoria | | Sabalenka, Aryna |
| | Belgium (1) |
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| Flipkens, Kirsten |
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| Brazil (1) |
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| Monteiro, Thiago |
| | Canada (1) |
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| Bouchard, Eugenie |
| | |
| Czech Republic (1) |
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| Muchova, Karolina |
| | Estonia (1) |
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| Kontaveit, Anett |
| | | Germany (1) |
|---|
| Zverev, Alexander |
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| | | Kazakhstan (1) |
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| Kukushkin, Mikhail |
| | Latvia (1) |
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| Ostapenko, Jelena |
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| Puerto Rico (1) |
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| Puig, Monica |
| | | | Slovakia (3) |
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| Cibulkova, Dominika | | Klizan, Martin | | Schmiedlova, Anna Karolina |
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| Spain (3) |
|---|
| Bautista Agut, Roberto | | Lopez, Feliciano | | Verdasco, Fernando |
| | Ukraine (1) |
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| Tsurenko, Lesia |
| | United Kingdom (1) |
|---|
| Evans, Daniel |
| | United States (1) |
|---|
| Johnson, Steve |
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