| Argentina (2) |
|---|
| Cerundolo, Francisco | | Etcheverry, Tomas Martin |
| | Australia (1) |
|---|
| De Minaur, Alex |
| | Bulgaria (1) |
|---|
| Dimitrov, Grigor |
| | Chile (1) |
|---|
| Tabilo, Alejandro |
|
| Czech Republic (2) |
|---|
| Lehecka, Jiri | | Machac, Tomas |
| | France (4) |
|---|
| Fils, Arthur | | Gasquet, Richard | | Monfils, Gael | | Muller, Alexandre |
| | Germany (1) |
|---|
| Altmaier, Daniel |
| | Italy (2) |
|---|
| Cobolli, Flavio | | Musetti, Lorenzo |
|
| Monaco (1) |
|---|
| Vacherot, Valentin |
| | | | Russia (2) |
|---|
| Medvedev, Daniil | | Rublev, Andrey |
|
| Serbia (1) |
|---|
| Djokovic, Novak |
| | Spain (4) |
|---|
| Alcaraz, Carlos | | Bautista Agut, Roberto | | Davidovich Fokina, Alejandro | | Martinez, Pedro |
|