Argentina (2) |
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Del Potro, Juan Martin | Schwartzman, Diego |
| Australia (2) |
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De Minaur, Alex | Kyrgios, Nick |
| Bulgaria (1) |
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Dimitrov, Grigor |
| Canada (3) |
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Auger-Aliassime, Felix | Raonic, Milos | Shapovalov, Denis |
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Chile (1) |
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Garin, Christian |
| | France (5) |
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Chardy, Jeremy | Mahut, Nicolas | Mannarino, Adrian | Pouille, Lucas | Simon, Gilles |
| Greece (1) |
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Tsitsipas, Stefano |
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Hungary (1) |
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Fucsovics, Marton |
| Italy (1) |
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Cecchinato, Marco |
| Kazakhstan (2) |
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Bublik, Alexander | Kukushkin, Mikhail |
| Russia (1) |
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Medvedev, Daniil |
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Slovenia (1) |
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Bedene, Aljaz |
| South Africa (1) |
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Anderson, Kevin |
| Spain (3) |
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Carballes Baena, Roberto | Lopez, Feliciano | Verdasco, Fernando |
| Switzerland (1) |
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Wawrinka, Stan |
|
United Kingdom (5) |
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Clarke, Jay | Edmund, Kyle | Evans, Daniel | Norrie, Cameron | Ward, James |
| United States (1) |
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Tiafoe, Frances |
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