| Bélgica (3) |
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Bemelmans, Ruben | Darcis, Steve | Goffin, David |
| Canadá (1) |
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Shapovalov, Denis |
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Chipre (1) |
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Baghdatis, Marcos |
| República Checa (2) |
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Berdych, Tomas | Vesely, Jiri |
| Francia (9) |
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Chardy, Jeremy | Herbert, Pierre-Hugues | Hoang, Antoine | Humbert, Ugo | Mahut, Nicolas | Paire, Benoit | Pouille, Lucas | Simon, Gilles | Tsonga, Jo-Wilfried |
| Alemania (2) |
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Bachinger, Matthias | Kohlschreiber, Philipp |
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Italia (1) |
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Fabbiano, Thomas |
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Gulbis, Ernests |
| | Polonia (1) |
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Hurkacz, Hubert |
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Krajinovic, Filip |
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Granollers, Marcel | Menendez-Maceiras, Adrian |
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Kudla, Denis |
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