| Argentina (6) |
|---|
| Berlocq, Carlos | | Delbonis, Federico | | Kicker, Nicolas | | Mayer, Leonardo | | Schwartzman, Diego | | Zeballos, Horacio |
| | Austria (1) |
|---|
| Haider-Maurer, Andreas |
| | Bosnia and Herzegovina (1) |
|---|
| Dzumhur, Damir |
| | Brasil (1) |
|---|
| Dutra Silva, Rogerio |
|
| Czech Republic (1) |
|---|
| Vesely, Jiri |
| | Dominican Republic (1) |
|---|
| Hernandez-Fernandez, Jose |
| | France (2) |
|---|
| Paire, Benoit | | Simon, Gilles |
| | Georgia (1) |
|---|
| Basilashvili, Nikoloz |
|
| Germany (8) |
|---|
| Altmaier, Daniel | | Haas, Tommy | | Kohlschreiber, Philipp | | Marterer, Maximilian | | Mayer, Florian | | Molleker, Rudolf | | Stebe, Cedrik-Marcel | | Struff, Jan-Lennard |
| | Italy (1) |
|---|
| Cecchinato, Marco |
| | Russia (5) |
|---|
| Donskoy, Evgeny | | Khachanov, Karen | | Kuznetsov, Andrey | | Rublev, Andrey | | Tursunov, Dmitry |
| | Slovenia (1) |
|---|
| Bedene, Aljaz |
|
| Spain (3) |
|---|
| Ferrer, David | | Ramos-Vinolas, Albert | | Verdasco, Fernando |
| |