| Argentina (1) |
|---|
| Mayer, Leonardo |
| | Australia (1) |
|---|
| Millman, John |
| | Brasil (1) |
|---|
| Monteiro, Thiago |
| | Canada (2) |
|---|
| Pospisil, Vasek | | Shapovalov, Denis |
|
| France (3) |
|---|
| Humbert, Ugo | | Mannarino, Adrian | | Paire, Benoit |
| | Italy (5) |
|---|
| Cecchinato, Marco | | Fognini, Fabio | | Seppi, Andreas | | Sinner, Jannik | | Sonego, Lorenzo |
| | | New Zealand (1) |
|---|
| Venus, Michael |
|
| | Poland (1) |
|---|
| Hurkacz, Hubert |
| | | Russia (1) |
|---|
| Khachanov, Karen |
|
| Spain (3) |
|---|
| Andujar, Pablo | | Davidovich Fokina, Alejandro | | Lopez, Feliciano |
| | | United Kingdom (2) |
|---|
| Edmund, Kyle | | Norrie, Cameron |
| | United States (4) |
|---|
| Isner, John | | Mmoh, Michael | | Sandgren, Tennys | | Tiafoe, Frances |
|