| Argentina (8) |
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| Bagnis, Facundo | | Del Potro, Juan Martin | | Delbonis, Federico | | Mayer, Leonardo | | Monaco, Juan | | Pella, Guido | | Schwartzman, Diego | | Zeballos, Horacio |
| | Austrália (7) |
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| Barton, Matthew | | Groth, Sam | | Kyrgios, Nick | | Millman, John | | Saville, Luke | | Thompson, Jordan | | Tomic, Bernard |
| | Áustria (1) |
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| Thiem, Dominic |
| | Bélgica (2) |
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| Bemelmans, Ruben | | Goffin, David |
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| Bósnia Herzegovina (1) |
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| Dzumhur, Damir |
| | Brasil (2) |
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| Bellucci, Thomaz | | Dutra Silva, Rogerio |
| | Bulgária (1) |
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| Dimitrov, Grigor |
| | Canadá (2) |
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| Pospisil, Vasek | | Raonic, Milos |
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| Colômbia (1) |
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| Giraldo, Santiago |
| | Croácia (5) |
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| Cilic, Marin | | Coric, Borna | | Dodig, Ivan | | Karlovic, Ivo | | Skugor, Franko |
| | Chipre (1) |
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| Baghdatis, Marcos |
| | República Checa (4) |
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| Berdych, Tomas | | Rosol, Lukas | | Stepanek, Radek | | Vesely, Jiri |
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| República Dominicana (1) |
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| Estrella Burgos, Victor |
| | França (16) |
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| Benneteau, Julien | | Chardy, Jeremy | | Gasquet, Richard | | Herbert, Pierre-Hugues | | Lamasine, Tristan | | Mahut, Nicolas | | Mannarino, Adrian | | Mathieu, Paul-Henri | | Monfils, Gael | | Olivetti, Albano | | Paire, Benoit | | Pouille, Lucas | | Robert, Stephane | | Roger-Vasselin, Edouard | | Simon, Gilles | | Tsonga, Jo-Wilfried |
| | Alemanha (6) |
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| Becker, Benjamin | | Brown, Dustin | | Kohlschreiber, Philipp | | Mayer, Florian | | Struff, Jan-Lennard | | Zverev, Alexander |
| |
| Itália (3) |
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| Fognini, Fabio | | Lorenzi, Paolo | | Seppi, Andreas |
| | Japão (3) |
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| Daniel, Taro | | Nishikori, Kei | | Nishioka, Yoshihito |
| | Cazaquistão (1) |
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| Kukushkin, Mikhail |
| | Letónia (1) |
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| Gulbis, Ernests |
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| Lituânia (1) |
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| Berankis, Ricardas |
| | Luxemburgo (1) |
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| Muller, Gilles |
| | | Holanda (2) |
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| Haase, Robin | | Sijsling, Igor |
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| Portugal (2) |
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| Elias, Gastao | | Sousa, Joao |
| | | Rússia (6) |
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| Donskoy, Evgeny | | Gabashvili, Teymuraz | | Kudryavtsev, Alexander | | Kuznetsov, Andrey | | Tursunov, Dmitry | | Youzhny, Mikhail |
| | Sérvia (4) |
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| Djokovic, Novak | | Lajovic, Dusan | | Tipsarevic, Janko | | Troicki, Viktor |
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| Eslováquia (2) |
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| Klizan, Martin | | Lacko, Lukas |
| | Eslovénia (1) |
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| Bedene, Aljaz |
| | África do Sul (1) |
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| Anderson, Kevin |
| | Espanha (11) |
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| Almagro, Nicolas | | Bautista Agut, Roberto | | Carreno Busta, Pablo | | Cervantes, Inigo | | Ferrer, David | | Garcia-Lopez, Guillermo | | Granollers, Marcel | | Lopez, Feliciano | | Montanes, Albert | | Ramos-Vinolas, Albert | | Verdasco, Fernando |
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| Suíça (2) |
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| Federer, Roger | | Wawrinka, Stan |
| | | | Ucrânia (3) |
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| Dolgopolov, Alexandr | | Marchenko, Illya | | Stakhovsky, Sergiy |
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| Reino Unido (8) |
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| Broady, Liam | | Edmund, Kyle | | Evans, Daniel | | Klein, Brydan | | Murray, Andy | | Ward, Alex | | Ward, James | | Willis, Marcus |
| | Estados Unidos (11) |
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| Baker, Brian | | Fratangelo, Bjorn | | Fritz, Taylor | | Isner, John | | Johnson, Steve | | Kudla, Denis | | Novikov, Dennis | | Querrey, Sam | | Ram, Rajeev | | Sock, Jack | | Young, Donald |
| | | Uzbequistão (1) |
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| Istomin, Denis |
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