| Argentina (2) |
|---|
| Delbonis, Federico | | Schwartzman, Diego |
| | | Bulgaria (1) |
|---|
| Dimitrov, Grigor |
| | Canada (2) |
|---|
| Auger-Aliassime, Felix | | Shapovalov, Denis |
|
| Denmark (1) |
|---|
| Holmgren, August |
| | Georgia (1) |
|---|
| Basilashvili, Nikoloz |
| | Germany (1) |
|---|
| Koepfer, Dominik |
| | Hungary (1) |
|---|
| Fucsovics, Marton |
|
| Italy (4) |
|---|
| Caruso, Salvatore | | Fognini, Fabio | | Gaio, Federico | | Sonego, Lorenzo |
| | | | Poland (1) |
|---|
| Hurkacz, Hubert |
|
| Russia (2) |
|---|
| Karatsev, Aslan | | Rublev, Andrey |
| | South Africa (2) |
|---|
| Anderson, Kevin | | Harris, Lloyd |
| | South Korea (1) |
|---|
| Kwon, Soonwoo |
| | United Kingdom (3) |
|---|
| Evans, Daniel | | Murray, Andy | | Norrie, Cameron |
|
| United States (6) |
|---|
| Eubanks, Christopher | | Fritz, Taylor | | Korda, Sebastian | | Kudla, Denis | | Nakashima, Brandon | | Paul, Tommy |
|