| Argentina (2) |
|---|
| Bagnis, Facundo | | Cachin, Pedro |
| | Austria (2) |
|---|
| Rodionov, Jurij | | Thiem, Dominic |
| | |
| Finland (1) |
|---|
| Virtanen, Otto |
| | France (4) |
|---|
| Bonzi, Benjamin | | Fils, Arthur | | Muller, Alexandre | | Rinderknech, Arthur |
| | Germany (2) |
|---|
| Altmaier, Daniel | | Hanfmann, Yannick |
| | Italy (2) |
|---|
| Fognini, Fabio | | Sonego, Lorenzo |
|
| | Peru (1) |
|---|
| Varillas, Juan Pablo |
| | Serbia (3) |
|---|
| Djere, Laslo | | Kecmanovic, Miomir | | Medjedovic, Hamad |
| | Spain (4) |
|---|
| Bautista Agut, Roberto | | Carballes Baena, Roberto | | Munar, Jaume | | Ramos-Vinolas, Albert |
|
| | Swiss (4) |
|---|
| Huesler, Marc-Andrea | | Ritschard, Alexander | | Stricker, Dominic | | Wawrinka, Stan |
|