| Argentina (2) |
|---|
| Delbonis, Federico | | Pella, Guido |
| | Austria (1) |
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| Thiem, Dominic |
| | | Bosnia-Herzegovina (1) |
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| Dzumhur, Damir |
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| Brazil (1) |
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| Bellucci, Thomaz |
| | Bulgaria (1) |
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| Dimitrov, Grigor |
| | | Croatia (2) |
|---|
| Coric, Borna | | Karlovic, Ivo |
|
| Czech Republic (3) |
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| Berdych, Tomas | | Rosol, Lukas | | Vesely, Jiri |
| | France (11) |
|---|
| Chardy, Jeremy | | Gasquet, Richard | | Herbert, Pierre-Hugues | | Mahut, Nicolas | | Mannarino, Adrian | | Monfils, Gael | | Paire, Benoit | | Pouille, Lucas | | Robert, Stephane | | Simon, Gilles | | Tsonga, Jo-Wilfried |
| | Germany (3) |
|---|
| Kohlschreiber, Philipp | | Struff, Jan-Lennard | | Zverev, Alexander |
| | Italy (3) |
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| Cecchinato, Marco | | Fognini, Fabio | | Lorenzi, Paolo |
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| Muller, Gilles |
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| Haase, Robin |
| |
| Russia (3) |
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| Gabashvili, Teymuraz | | Kuznetsov, Andrey | | Rublev, Andrey |
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| Djokovic, Novak | | Krajinovic, Filip | | Troicki, Viktor |
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| Bedene, Aljaz |
| | Spain (12) |
|---|
| Almagro, Nicolas | | Bautista Agut, Roberto | | Carreno Busta, Pablo | | Cervantes, Inigo | | Ferrer, David | | Garcia-Lopez, Guillermo | | Gimeno-Traver, Daniel | | Granollers, Marcel | | Lopez, Feliciano | | Nadal, Rafael | | Ramos-Vinolas, Albert | | Verdasco, Fernando |
|
| Switzerland (2) |
|---|
| Federer, Roger | | Wawrinka, Stan |
| | United Kingdom (1) |
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| Murray, Andy |
| |