| Argentina (3) |
|---|
| Bagnis, Facundo | | Etcheverry, Tomas Martin | | Villanueva, Gonzalo |
| | Australia (6) |
|---|
| Hijikata, Rinky | | Kokkinakis, Thanasi | | Kubler, Jason | | Millman, John | | Purcell, Max | | Thompson, Jordan |
| | Canada (1) |
|---|
| Auger-Aliassime, Felix |
| | Colombia (1) |
|---|
| Barrientos, Nicolas |
|
| | Germany (1) |
|---|
| Hanfmann, Yannick |
| | | Lithuania (1) |
|---|
| Berankis, Ricardas |
|
| Mexico (3) |
|---|
| Escobedo, Ernesto | | Hernandez, Alex | | Pacheco Mendez, Rodrigo |
| | | Russia (1) |
|---|
| Medvedev, Daniil |
| | Serbia (1) |
|---|
| Kecmanovic, Miomir |
|
| Spain (2) |
|---|
| Lopez, Feliciano | | Verdasco, Fernando |
| | Swiss (1) |
|---|
| Laaksonen, Henri |
| | Taiwan (1) |
|---|
| Tseng, Chun-Hsin |
| | United Kingdom (1) |
|---|
| Norrie, Cameron |
|
| United States (3) |
|---|
| Chappell, Nick | | Johnson, Steve | | Nakashima, Brandon |
|