| Argentina (1) |
|---|
| Schwartzman, Diego |
| | Australia (3) |
|---|
| De Minaur, Alex | | Ebden, Matthew | | Millman, John |
| | Austria (1) |
|---|
| Thiem, Dominic |
| | Bosnia and Herzegovina (1) |
|---|
| Dzumhur, Damir |
|
| Bulgaria (1) |
|---|
| Dimitrov, Grigor |
| | Canada (2) |
|---|
| Raonic, Milos | | Shapovalov, Denis |
| | Croatia (2) |
|---|
| Cilic, Marin | | Coric, Borna |
| | France (10) |
|---|
| Chardy, Jeremy | | Gasquet, Richard | | Herbert, Pierre-Hugues | | Humbert, Ugo | | Mahut, Nicolas | | Mannarino, Adrian | | Paire, Benoit | | Pouille, Lucas | | Simon, Gilles | | Tsonga, Jo-Wilfried |
|
| Georgia (1) |
|---|
| Basilashvili, Nikoloz |
| | Germany (3) |
|---|
| Gojowczyk, Peter | | Kohlschreiber, Philipp | | Zverev, Alexander |
| | Greece (1) |
|---|
| Tsitsipas, Stefano |
| | Hungary (1) |
|---|
| Fucsovics, Marton |
|
| Italy (2) |
|---|
| Cecchinato, Marco | | Fognini, Fabio |
| | | Kazakhstan (1) |
|---|
| Kukushkin, Mikhail |
| | Netherlands (1) |
|---|
| Haase, Robin |
|
| | Russia (2) |
|---|
| Khachanov, Karen | | Medvedev, Daniil |
| | Serbia (2) |
|---|
| Djokovic, Novak | | Krajinovic, Filip |
| | South Africa (1) |
|---|
| Anderson, Kevin |
|
| Spain (5) |
|---|
| Bautista Agut, Roberto | | Carreno Busta, Pablo | | Lopez, Feliciano | | Nadal, Rafael | | Verdasco, Fernando |
| | | | United Kingdom (1) |
|---|
| Edmund, Kyle |
|
| United States (4) |
|---|
| Isner, John | | Johnson, Steve | | Sock, Jack | | Tiafoe, Frances |
|