| Argentina (8) |
|---|
| Del Potro, Juan Martin | | Delbonis, Federico | | Mayer, Leonardo | | Monaco, Juan | | Olivo, Renzo | | Pella, Guido | | Schwartzman, Diego | | Trungelliti, Marco |
| | Australia (4) |
|---|
| Groth, Sam | | Kyrgios, Nick | | Millman, John | | Tomic, Bernard |
| | Austria (1) |
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| Thiem, Dominic |
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| Bosnia-Erzegovina (1) |
|---|
| Dzumhur, Damir |
| | Brasile (1) |
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| Bellucci, Thomaz |
| | Bulgaria (1) |
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| Dimitrov, Grigor |
| | Canada (3) |
|---|
| Polansky, Peter | | Pospisil, Vasek | | Raonic, Milos |
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| Colombia (1) |
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| Giraldo, Santiago |
| | Croazia (3) |
|---|
| Cilic, Marin | | Coric, Borna | | Dodig, Ivan |
| | Repubblica Ceca (3) |
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| Berdych, Tomas | | Rosol, Lukas | | Vesely, Jiri |
| | Repubblica Dominicana (1) |
|---|
| Estrella Burgos, Victor |
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| Francia (11) |
|---|
| Chardy, Jeremy | | Gasquet, Richard | | Herbert, Pierre-Hugues | | Mahut, Nicolas | | Mannarino, Adrian | | Millot, Vincent | | Monfils, Gael | | Paire, Benoit | | Pouille, Lucas | | Simon, Gilles | | Tsonga, Jo-Wilfried |
| | Germania (3) |
|---|
| Berrer, Michael | | Kohlschreiber, Philipp | | Zverev, Alexander |
| | | Giappone (1) |
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| Nishikori, Kei |
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| Kazakistan (1) |
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| Kukushkin, Mikhail |
| | Lettonia (1) |
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| Gulbis, Ernests |
| | Lussemburgo (1) |
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| Muller, Gilles |
| | Olanda (2) |
|---|
| Bakker, Thiemo de | | Haase, Robin |
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| Portogallo (1) |
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| Sousa, Joao |
| | Russia (5) |
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| Donskoy, Evgeny | | Gabashvili, Teymuraz | | Kuznetsov, Andrey | | Tursunov, Dmitry | | Youzhny, Mikhail |
| | Serbia (3) |
|---|
| Djokovic, Novak | | Lajovic, Dusan | | Troicki, Viktor |
| | Slovacchia (2) |
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| Klizan, Martin | | Kovalik, Jozef |
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| Slovenia (1) |
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| Bedene, Aljaz |
| | Corea del Sud (1) |
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| Chung, Hyeon |
| | Spagna (11) |
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| Almagro, Nicolas | | Bautista Agut, Roberto | | Carreno Busta, Pablo | | Cervantes, Inigo | | Garcia-Lopez, Guillermo | | Granollers, Marcel | | Lopez, Feliciano | | Muñoz de la Nava, Daniel | | Nadal, Rafael | | Ramos-Vinolas, Albert | | Verdasco, Fernando |
| | Svizzera (1) |
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| Wawrinka, Stan |
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| Ucraina (2) |
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| Dolgopolov, Alexandr | | Marchenko, Illya |
| | Regno Unito (2) |
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| Edmund, Kyle | | Murray, Andy |
| | Stati Uniti (16) |
|---|
| Donaldson, Jared | | Fratangelo, Bjorn | | Fritz, Taylor | | Harrison, Ryan | | Isner, John | | Johnson, Steve | | Kudla, Denis | | McDonald, Mackenzie | | Querrey, Sam | | Ram, Rajeev | | Rubin, Noah | | Sarkissian, Alexander | | Smyczek, Tim | | Sock, Jack | | Tiafoe, Frances | | Young, Donald |
| |
| Usbechistan (1) |
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| Istomin, Denis |
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