| Hviderusland (1) |
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| Ivashka, Ilya |
| | Belgien (3) |
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| Bemelmans, Ruben | | Darcis, Steve | | Goffin, David |
| | Canada (1) |
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| Shapovalov, Denis |
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| Karlovic, Ivo |
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| Baghdatis, Marcos |
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| Berdych, Tomas | | Vesely, Jiri |
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| Chardy, Jeremy | | Herbert, Pierre-Hugues | | Hoang, Antoine | | Humbert, Ugo | | Mahut, Nicolas | | Paire, Benoit | | Pouille, Lucas | | Simon, Gilles | | Tsonga, Jo-Wilfried |
| | Tyskland (2) |
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| Bachinger, Matthias | | Kohlschreiber, Philipp |
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| Italien (1) |
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| Fabbiano, Thomas |
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| Gulbis, Ernests |
| | |
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| Donskoy, Evgeny |
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| Krajinovic, Filip |
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| Granollers, Marcel | | Menendez-Maceiras, Adrian |
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