| Argentina (4) |
|---|
| Baez, Sebastian | | Etcheverry, Tomas Martin | | Navone, Mariano | | Ugo Carabelli, Camilo |
| | Australia (1) |
|---|
| De Minaur, Alex |
| | Czech Republic (1) |
|---|
| Machac, Tomas |
| | France (4) |
|---|
| Atmane, Terence | | Fils, Arthur | | Mannarino, Adrian | | Moutet, Corentin |
|
| Italy (2) |
|---|
| Musetti, Lorenzo | | Sonego, Lorenzo |
| | Monaco (1) |
|---|
| Vacherot, Valentin |
| | |
| Russia (2) |
|---|
| Khachanov, Karen | | Rublev, Andrey |
| | Spain (4) |
|---|
| Alcaraz, Carlos | | Jodar, Rafael | | Landaluce, Martin | | Munar, Jaume |
| | Switzerland (1) |
|---|
| Wawrinka, Stan |
| | United Kingdom (2) |
|---|
| Draper, Jack | | Norrie, Cameron |
|
| United States (2) |
|---|
| Nakashima, Brandon | | Opelka, Reilly |
|