Argentina (7) |
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Bagnis, Facundo | Del Potro, Juan Martin | Delbonis, Federico | Monaco, Juan | Pella, Guido | Schwartzman, Diego | Zeballos, Horacio |
| Australia (3) |
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Kyrgios, Nick | Thompson, Jordan | Tomic, Bernard |
| Austria (1) |
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Thiem, Dominic |
| |
| Bosnia-Erzegovina (1) |
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Dzumhur, Damir |
| Brasile (2) |
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Bellucci, Thomaz | Monteiro, Thiago |
| Bulgaria (1) |
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Dimitrov, Grigor |
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| Croazia (3) |
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Cilic, Marin | Coric, Borna | Karlovic, Ivo |
| Repubblica Ceca (3) |
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Berdych, Tomas | Pavlasek, Adam | Vesely, Jiri |
| Francia (7) |
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Chardy, Jeremy | Mahut, Nicolas | Mannarino, Adrian | Paire, Benoit | Pouille, Lucas | Robert, Stephane | Simon, Gilles |
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Georgia (1) |
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Basilashvili, Nikoloz |
| Germania (8) |
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Becker, Benjamin | Brown, Dustin | Haas, Tommy | Kohlschreiber, Philipp | Mayer, Florian | Struff, Jan-Lennard | Zverev, Alexander | Zverev, Mischa |
| | Italia (3) |
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Fognini, Fabio | Lorenzi, Paolo | Seppi, Andreas |
|
Giappone (2) |
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Nishikori, Kei | Nishioka, Yoshihito |
| Kazakistan (1) |
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Kukushkin, Mikhail |
| Lussemburgo (1) |
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Muller, Gilles |
| Messico (1) |
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Escobedo, Ernesto |
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| | | Portogallo (2) |
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Elias, Gastao | Sousa, Joao |
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Russia (5) |
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Khachanov, Karen | Kravchuk, Konstantin | Kuznetsov, Andrey | Rublev, Andrey | Youzhny, Mikhail |
| Serbia (2) |
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Lajovic, Dusan | Troicki, Viktor |
| Slovacchia (2) |
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Klizan, Martin | Lacko, Lukas |
| Slovenia (1) |
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Bedene, Aljaz |
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Sud Africa (1) |
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Anderson, Kevin |
| Corea del Sud (1) |
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Chung, Hyeon |
| Spagna (9) |
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Bautista Agut, Roberto | Carreno Busta, Pablo | Ferrer, David | Granollers, Marcel | Lopez, Feliciano | Nadal, Rafael | Ramos-Vinolas, Albert | Robredo, Tommy | Verdasco, Fernando |
| |
Svizzera (2) |
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Federer, Roger | Wawrinka, Stan |
| | | Ucraina (1) |
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Dolgopolov, Alexandr |
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Regno Unito (2) |
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Edmund, Kyle | Evans, Daniel |
| Stati Uniti (12) |
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Donaldson, Jared | Fritz, Taylor | Harrison, Christian | Harrison, Ryan | Isner, John | Johnson, Steve | Mmoh, Michael | Querrey, Sam | Smyczek, Tim | Sock, Jack | Tiafoe, Frances | Young, Donald |
| | Usbechistan (1) |
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Istomin, Denis |
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