| Bulgaria (1) |
|---|
| Dimitrov, Grigor |
| | | Czech Republic (1) |
|---|
| Kvitova, Petra |
| |
| Germany (2) |
|---|
| Altmaier, Daniel | | Siegemund, Laura |
| | Greece (1) |
|---|
| Tsitsipas, Stefano |
| | Hungary (1) |
|---|
| Fucsovics, Marton |
| | Russia (2) |
|---|
| Khachanov, Karen | | Rublev, Andrey |
|
| Serbia (1) |
|---|
| Djokovic, Novak |
| | Spain (2) |
|---|
| Badosa Gibert, Paula | | Carreno Busta, Pablo |
| | | United States (2) |
|---|
| Collins, Danielle | | Kenin, Sofia |
|