| Argentina (7) |
|---|
| Baez, Sebastian | | Bagnis, Facundo | | Cachin, Pedro | | Cerundolo, Francisco | | Cerundolo, Juan Manuel | | Etcheverry, Tomas Martin | | Schwartzman, Diego |
| | Austria (1) |
|---|
| Thiem, Dominic |
| | | Brazil (4) |
|---|
| Alves, Mateus | | Bellucci, Thomaz | | Fonseca, Joao | | Monteiro, Thiago |
|
| Chile (3) |
|---|
| Barrios Vera, Tomas | | Garin, Christian | | Jarry, Nicolas |
| | Colombia (1) |
|---|
| Galan, Daniel Elahi |
| | | Italy (2) |
|---|
| Fognini, Fabio | | Musetti, Lorenzo |
|
| Peru (1) |
|---|
| Varillas, Juan Pablo |
| | | Serbia (2) |
|---|
| Djere, Laslo | | Lajovic, Dusan |
| |
| Spain (6) |
|---|
| Alcaraz, Carlos | | Carballes Baena, Roberto | | Martinez, Pedro | | Munar, Jaume | | Ramos-Vinolas, Albert | | Zapata Miralles, Bernabe |
| | United Kingdom (1) |
|---|
| Norrie, Cameron |
|