| Argentina (1) |
|---|
| Del Potro, Juan Martin |
| | Australia (1) |
|---|
| Barty, Ashleigh |
| | Austria (1) |
|---|
| Thiem, Dominic |
| | Czech Republic (1) |
|---|
| Siniakova, Katerina |
|
| | Germany (2) |
|---|
| Struff, Jan-Lennard | | Zverev, Alexander |
| | |
| | Russia (1) |
|---|
| Khachanov, Karen |
| | Serbia (1) |
|---|
| Djokovic, Novak |
| | Spain (1) |
|---|
| Bolsova Zadoinov, Aliona |
|
| United States (3) |
|---|
| Anisimova, Amanda | | Kenin, Sofia | | Keys, Madison |
|