| Argentina (3) |
|---|
| Coria, Federico | | Delbonis, Federico | | Schwartzman, Diego |
| | Australia (3) |
|---|
| De Minaur, Alex | | Millman, John | | Thompson, Jordan |
| | | Canada (2) |
|---|
| Auger-Aliassime, Felix | | Raonic, Milos |
|
| Croatia (2) |
|---|
| Cilic, Marin | | Coric, Borna |
| | France (8) |
|---|
| Bonzi, Benjamin | | Gasquet, Richard | | Gaston, Hugo | | Herbert, Pierre-Hugues | | Humbert, Ugo | | Mannarino, Adrian | | Moutet, Corentin | | Simon, Gilles |
| | Georgia (1) |
|---|
| Basilashvili, Nikoloz |
| | Germany (2) |
|---|
| Struff, Jan-Lennard | | Zverev, Alexander |
|
| Greece (1) |
|---|
| Tsitsipas, Stefano |
| | Hungary (1) |
|---|
| Fucsovics, Marton |
| | Italy (5) |
|---|
| Berrettini, Matteo | | Caruso, Salvatore | | Cecchinato, Marco | | Sonego, Lorenzo | | Travaglia, Stefano |
| | Japan (1) |
|---|
| Nishioka, Yoshihito |
|
| Kazakhstan (1) |
|---|
| Bublik, Alexander |
| | | | Poland (1) |
|---|
| Hurkacz, Hubert |
|
| Russia (3) |
|---|
| Khachanov, Karen | | Medvedev, Daniil | | Rublev, Andrey |
| | Serbia (4) |
|---|
| Djere, Laslo | | Kecmanovic, Miomir | | Krajinovic, Filip | | Lajovic, Dusan |
| | Slovakia (1) |
|---|
| Gombos, Norbert |
| | Slovenia (1) |
|---|
| Bedene, Aljaz |
|
| South Africa (1) |
|---|
| Anderson, Kevin |
| | Spain (6) |
|---|
| Andujar, Pablo | | Carreno Busta, Pablo | | Davidovich Fokina, Alejandro | | Lopez, Feliciano | | Nadal, Rafael | | Ramos-Vinolas, Albert |
| | Switzerland (1) |
|---|
| Wawrinka, Stan |
| | United Kingdom (1) |
|---|
| Evans, Daniel |
|
| United States (4) |
|---|
| Fritz, Taylor | | Giron, Marcos | | Paul, Tommy | | Sandgren, Tennys |
|