| Argentina (7) |
|---|
| Bagnis, Facundo | | Del Potro, Juan Martin | | Delbonis, Federico | | Monaco, Juan | | Pella, Guido | | Schwartzman, Diego | | Zeballos, Horacio |
| | Australia (3) |
|---|
| Kyrgios, Nick | | Thompson, Jordan | | Tomic, Bernard |
| | Austria (1) |
|---|
| Thiem, Dominic |
| |
| | Bosnia-Herzegovina (1) |
|---|
| Dzumhur, Damir |
| | Brazil (2) |
|---|
| Bellucci, Thomaz | | Monteiro, Thiago |
| | Bulgaria (1) |
|---|
| Dimitrov, Grigor |
|
| | Croatia (3) |
|---|
| Cilic, Marin | | Coric, Borna | | Karlovic, Ivo |
| | Czech Republic (3) |
|---|
| Berdych, Tomas | | Pavlasek, Adam | | Vesely, Jiri |
| | France (7) |
|---|
| Chardy, Jeremy | | Mahut, Nicolas | | Mannarino, Adrian | | Paire, Benoit | | Pouille, Lucas | | Robert, Stephane | | Simon, Gilles |
|
| Georgia (1) |
|---|
| Basilashvili, Nikoloz |
| | Germany (8) |
|---|
| Becker, Benjamin | | Brown, Dustin | | Haas, Tommy | | Kohlschreiber, Philipp | | Mayer, Florian | | Struff, Jan-Lennard | | Zverev, Alexander | | Zverev, Mischa |
| | | Italy (3) |
|---|
| Fognini, Fabio | | Lorenzi, Paolo | | Seppi, Andreas |
|
| Japan (2) |
|---|
| Nishikori, Kei | | Nishioka, Yoshihito |
| | Kazakhstan (1) |
|---|
| Kukushkin, Mikhail |
| | Luxembourg (1) |
|---|
| Muller, Gilles |
| | Mexico (1) |
|---|
| Escobedo, Ernesto |
|
| | Netherlands (1) |
|---|
| Haase, Robin |
| | | Portugal (2) |
|---|
| Elias, Gastao | | Sousa, Joao |
|
| Russia (5) |
|---|
| Khachanov, Karen | | Kravchuk, Konstantin | | Kuznetsov, Andrey | | Rublev, Andrey | | Youzhny, Mikhail |
| | Serbia (2) |
|---|
| Lajovic, Dusan | | Troicki, Viktor |
| | Slovakia (2) |
|---|
| Klizan, Martin | | Lacko, Lukas |
| | Slovenia (1) |
|---|
| Bedene, Aljaz |
|
| South Africa (1) |
|---|
| Anderson, Kevin |
| | South Korea (1) |
|---|
| Chung, Hyeon |
| | Spain (9) |
|---|
| Bautista Agut, Roberto | | Carreno Busta, Pablo | | Ferrer, David | | Granollers, Marcel | | Lopez, Feliciano | | Nadal, Rafael | | Ramos-Vinolas, Albert | | Robredo, Tommy | | Verdasco, Fernando |
| |
| Switzerland (2) |
|---|
| Federer, Roger | | Wawrinka, Stan |
| | | | Ukraine (1) |
|---|
| Dolgopolov, Alexandr |
|
| United Kingdom (2) |
|---|
| Edmund, Kyle | | Evans, Daniel |
| | United States (12) |
|---|
| Donaldson, Jared | | Fritz, Taylor | | Harrison, Christian | | Harrison, Ryan | | Isner, John | | Johnson, Steve | | Mmoh, Michael | | Querrey, Sam | | Smyczek, Tim | | Sock, Jack | | Tiafoe, Frances | | Young, Donald |
| | | Uzbekistan (1) |
|---|
| Istomin, Denis |
|