| Argentina (3) |
|---|
| Mayer, Leonardo | | Pella, Guido | | Schwartzman, Diego |
| | Bielorussia (1) |
|---|
| Ivashka, Ilya |
| | Belgio (1) |
|---|
| Bemelmans, Ruben |
| | Canada (2) |
|---|
| Pospisil, Vasek | | Raonic, Milos |
|
| | Repubblica Ceca (1) |
|---|
| Vesely, Jiri |
| | Francia (6) |
|---|
| Gasquet, Richard | | Lestienne, Constant | | Monfils, Gael | | Robert, Stephane | | Simon, Gilles | | Tsonga, Jo-Wilfried |
| | Germania (1) |
|---|
| Struff, Jan-Lennard |
|
| | Italia (1) |
|---|
| Caruso, Salvatore |
| | Olanda (2) |
|---|
| Griekspoor, Tallon | | Haase, Robin |
| | Spagna (5) |
|---|
| Carballes Baena, Roberto | | Granollers, Marcel | | Lopez, Feliciano | | Munar, Jaume | | Ramos-Vinolas, Albert |
|
| Ucraina (1) |
|---|
| Stakhovsky, Sergiy |
| | Regno Unito (2) |
|---|
| Edmund, Kyle | | Norrie, Cameron |
| | Stati Uniti (2) |
|---|
| McDonald, Mackenzie | | Tiafoe, Frances |
|