| Argentina (2) |
|---|
| Delbonis, Federico | | Etcheverry, Tomas Martin |
| | Austria (1) |
|---|
| Thiem, Dominic |
| | | Brasil (1) |
|---|
| Monteiro, Thiago |
|
| Chile (2) |
|---|
| Garin, Christian | | Jarry, Nicolas |
| | Czech Republic (2) |
|---|
| Kopriva, Vit | | Lehecka, Jiri |
| | France (4) |
|---|
| Gasquet, Richard | | Gaston, Hugo | | Moutet, Corentin | | Paire, Benoit |
| | Germany (1) |
|---|
| Hanfmann, Yannick |
|
| Italy (2) |
|---|
| Berrettini, Matteo | | Sonego, Lorenzo |
| | | Peru (1) |
|---|
| Varillas, Juan Pablo |
| |
| | Spain (7) |
|---|
| Bautista Agut, Roberto | | Carballes Baena, Roberto | | Martinez, Pedro | | Munar, Jaume | | Ramos-Vinolas, Albert | | Taberner, Carlos | | Zapata Miralles, Bernabe |
| | Sweden (2) |
|---|
| Ymer, Elias | | Ymer, Mikael |
| | Swiss (3) |
|---|
| Huesler, Marc-Andrea | | Ritschard, Alexander | | Stricker, Dominic |
|