| Austria (3) |
|---|
| Melzer, Gerald | | Melzer, Jurgen | | Thiem, Dominic |
| | Bosnia-Erzegovina (1) |
|---|
| Dzumhur, Damir |
| | | Repubblica Ceca (1) |
|---|
| Berdych, Tomas |
|
| Francia (4) |
|---|
| Pouille, Lucas | | Robert, Stephane | | Simon, Gilles | | Tsonga, Jo-Wilfried |
| | Georgia (1) |
|---|
| Basilashvili, Nikoloz |
| | Germania (3) |
|---|
| Becker, Benjamin | | Kohlschreiber, Philipp | | Struff, Jan-Lennard |
| | Italia (2) |
|---|
| Fognini, Fabio | | Seppi, Andreas |
|
| Portogallo (1) |
|---|
| Sousa, Joao |
| | Russia (1) |
|---|
| Khachanov, Karen |
| | Serbia (1) |
|---|
| Troicki, Viktor |
| | Slovacchia (1) |
|---|
| Klizan, Martin |
|
| Sud Africa (1) |
|---|
| Anderson, Kevin |
| | Spagna (6) |
|---|
| Almagro, Nicolas | | Bautista Agut, Roberto | | Ferrer, David | | Garcia-Lopez, Guillermo | | Lopez, Feliciano | | Ramos-Vinolas, Albert |
| | Regno Unito (2) |
|---|
| Edmund, Kyle | | Murray, Andy |
| | Stati Uniti (2) |
|---|
| Isner, John | | Johnson, Steve |
|
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