| Argentina (1) |
|---|
| Schwartzman, Diego |
| | Austria (1) |
|---|
| Thiem, Dominic |
| | | Canada (1) |
|---|
| Shapovalov, Denis |
|
| France (2) |
|---|
| Paire, Benoit | | Pouille, Lucas |
| | Germany (1) |
|---|
| Zverev, Alexander |
| | Greece (1) |
|---|
| Tsitsipas, Stefano |
| |
| | Russia (1) |
|---|
| Khachanov, Karen |
| | Spain (2) |
|---|
| Ferrer, David | | Nadal, Rafael |
| | United Kingdom (1) |
|---|
| Murray, Andy |
|
| United States (2) |
|---|
| Isner, John | | Tiafoe, Frances |
|