| Argentina (1) |
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| Schwartzman, Diego |
| | Australia (3) |
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| Barty, Ashleigh | | Birrell, Kimberly | | De Minaur, Alex |
| | Belarus (2) |
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| Sabalenka, Aryna | | Sasnovich, Aliaksandra |
| | Bulgaria (1) |
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| Dimitrov, Grigor |
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| Croatia (2) |
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| Cilic, Marin | | Martic, Petra |
| | Czech Republic (2) |
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| Berdych, Tomas | | Kvitova, Petra |
| | Denmark (1) |
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| Wozniacki, Caroline |
| | France (1) |
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| Garcia, Caroline |
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| Georgia (1) |
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| Basilashvili, Nikoloz |
| | Germany (1) |
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| Kerber, Angelique |
| | Greece (2) |
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| Sakkari, Maria | | Tsitsipas, Stefano |
| | Italy (2) |
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| Fabbiano, Thomas | | Seppi, Andreas |
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| Russia (3) |
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| Khachanov, Karen | | Pavlyuchenkova, Anastasia | | Sharapova, Maria |
| | Spain (3) |
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| Bautista Agut, Roberto | | Nadal, Rafael | | Verdasco, Fernando |
| | Switzerland (2) |
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| Bencic, Belinda | | Federer, Roger |
| | United States (5) |
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| Anisimova, Amanda | | Collins, Danielle | | Fritz, Taylor | | Stephens, Sloane | | Tiafoe, Frances |
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