| Argentina (2) |
|---|
| Delbonis, Federico | | Schwartzman, Diego |
| | Australia (2) |
|---|
| De Minaur, Alex | | Millman, John |
| | Austria (1) |
|---|
| Thiem, Dominic |
| |
| | Bulgaria (1) |
|---|
| Dimitrov, Grigor |
| | Canada (2) |
|---|
| Auger-Aliassime, Felix | | Shapovalov, Denis |
| |
| | Francia (5) |
|---|
| Gasquet, Richard | | Humbert, Ugo | | Mannarino, Adrian | | Monfils, Gael | | Paire, Benoit |
| | Georgia (1) |
|---|
| Basilashvili, Nikoloz |
| | Germania (2) |
|---|
| Struff, Jan-Lennard | | Zverev, Alexander |
|
| Grecia (1) |
|---|
| Tsitsipas, Stefanos |
| | Ungheria (1) |
|---|
| Fucsovics, Marton |
| | Italia (8) |
|---|
| Berrettini, Matteo | | Caruso, Salvatore | | Fognini, Fabio | | Mager, Gianluca | | Musetti, Lorenzo | | Sinner, Jannik | | Sonego, Lorenzo | | Travaglia, Stefano |
| | Giappone (2) |
|---|
| Nishikori, Kei | | Nishioka, Yoshihito |
|
| Kazakistan (1) |
|---|
| Bublik, Alexander |
| | Polonia (2) |
|---|
| Hurkacz, Hubert | | Majchrzak, Kamil |
| | Russia (4) |
|---|
| Karatsev, Aslan | | Khachanov, Karen | | Medvedev, Daniil | | Rublev, Andrey |
| | Serbia (5) |
|---|
| Djere, Laslo | | Djokovic, Novak | | Kecmanovic, Miomir | | Krajinovic, Filip | | Lajovic, Dusan |
|
| Slovenia (1) |
|---|
| Bedene, Aljaz |
| | Sud Africa (1) |
|---|
| Harris, Lloyd |
| | Spagna (5) |
|---|
| Bautista Agut, Roberto | | Carballes Baena, Roberto | | Carreno Busta, Pablo | | Davidovich Fokina, Alejandro | | Nadal, Rafael |
| | Regno Unito (2) |
|---|
| Evans, Daniel | | Norrie, Cameron |
|
| Stati Uniti (3) |
|---|
| Fritz, Taylor | | Opelka, Reilly | | Paul, Tommy |
|