| Argentina (3) |
|---|
| Berlocq, Carlos | | Del Potro, Juan Martin | | Schwartzman, Diego |
| | Australia (2) |
|---|
| Kyrgios, Nick | | Tomic, Bernard |
| | Austria (1) |
|---|
| Thiem, Dominic |
| |
| Brasil (2) |
|---|
| Bellucci, Thomaz | | Monteiro, Thiago |
| | Bulgaria (1) |
|---|
| Dimitrov, Grigor |
| | | Croatia (2) |
|---|
| Cilic, Marin | | Karlovic, Ivo |
|
| Czech Republic (2) |
|---|
| Berdych, Tomas | | Vesely, Jiri |
| | France (5) |
|---|
| Mahut, Nicolas | | Mannarino, Adrian | | Paire, Benoit | | Pouille, Lucas | | Simon, Gilles |
| | Germany (5) |
|---|
| Haas, Tommy | | Mayer, Florian | | Struff, Jan-Lennard | | Zverev, Alexander | | Zverev, Mischa |
| | Italy (5) |
|---|
| Berrettini, Matteo | | Fognini, Fabio | | Mager, Gianluca | | Napolitano, Stefano | | Seppi, Andreas |
|
| | Mexico (1) |
|---|
| Escobedo, Ernesto |
| | Netherlands (1) |
|---|
| Haase, Robin |
| |
| Serbia (2) |
|---|
| Djokovic, Novak | | Troicki, Viktor |
| | Slovenia (1) |
|---|
| Bedene, Aljaz |
| | South Africa (1) |
|---|
| Anderson, Kevin |
| | Spain (8) |
|---|
| Almagro, Nicolas | | Bautista Agut, Roberto | | Carreno Busta, Pablo | | Ferrer, David | | Lopez, Feliciano | | Nadal, Rafael | | Ramos-Vinolas, Albert | | Verdasco, Fernando |
|
| | Ukraine (1) |
|---|
| Dolgopolov, Alexandr |
| | United Kingdom (3) |
|---|
| Edmund, Kyle | | Evans, Daniel | | Murray, Andy |
| | United States (6) |
|---|
| Donaldson, Jared | | Harrison, Ryan | | Isner, John | | Querrey, Sam | | Sock, Jack | | Young, Donald |
|
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