| Argentina (5) |
|---|
| Coria, Federico | | Delbonis, Federico | | Londero, Juan Ignacio | | Mayer, Leonardo | | Pella, Guido |
| | Austria (1) |
|---|
| Thiem, Dominic |
| | | Brasil (3) |
|---|
| Meligeni Rodrigues Alves, Felipe | | Monteiro, Thiago | | Seyboth Wild, Thiago |
|
| Chile (1) |
|---|
| Garin, Christian |
| | | France (1) |
|---|
| Moutet, Corentin |
| | Hungary (1) |
|---|
| Balazs, Attila |
|
| Italy (5) |
|---|
| Caruso, Salvatore | | Cecchinato, Marco | | Gaio, Federico | | Mager, Gianluca | | Sonego, Lorenzo |
| | | Portugal (2) |
|---|
| Domingues, Joao | | Sousa, Pedro |
| |
| Slovakia (1) |
|---|
| Martin, Andrej |
| | Spain (8) |
|---|
| Alcaraz, Carlos | | Andujar, Pablo | | Carballes Baena, Roberto | | Davidovich Fokina, Alejandro | | Martinez, Pedro | | Munar, Jaume | | Ramos-Vinolas, Albert | | Verdasco, Fernando |
| |