| Argentina (4) |
|---|
| Delbonis, Federico | | Londero, Juan Ignacio | | Pella, Guido | | Schwartzman, Diego |
| | Australia (4) |
|---|
| De Minaur, Alex | | Millman, John | | Popyrin, Alexei | | Thompson, Jordan |
| | | Bulgaria (1) |
|---|
| Dimitrov, Grigor |
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| Canada (1) |
|---|
| Auger-Aliassime, Felix |
| | | | Danimarca (1) |
|---|
| Rune, Holger Vitus Nodskov |
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| Francia (5) |
|---|
| Chardy, Jeremy | | Humbert, Ugo | | Mannarino, Adrian | | Paire, Benoit | | Pouille, Lucas |
| | Georgia (1) |
|---|
| Basilashvili, Nikoloz |
| | Germania (3) |
|---|
| Koepfer, Dominik | | Struff, Jan-Lennard | | Zverev, Alexander |
| | Grecia (1) |
|---|
| Tsitsipas, Stefanos |
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| Ungheria (1) |
|---|
| Fucsovics, Marton |
| | Italia (9) |
|---|
| Berrettini, Matteo | | Caruso, Salvatore | | Cecchinato, Marco | | Fabbiano, Thomas | | Fognini, Fabio | | Musetti, Lorenzo | | Sinner, Jannik | | Sonego, Lorenzo | | Travaglia, Stefano |
| | Kazakistan (1) |
|---|
| Bublik, Alexander |
| | Monaco (1) |
|---|
| Catarina, Lucas |
|
| | Polonia (1) |
|---|
| Hurkacz, Hubert |
| | Russia (4) |
|---|
| Karatsev, Aslan | | Khachanov, Karen | | Medvedev, Daniil | | Rublev, Andrey |
| | Serbia (5) |
|---|
| Djere, Laslo | | Djokovic, Novak | | Kecmanovic, Miomir | | Krajinovic, Filip | | Lajovic, Dusan |
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| Spagna (7) |
|---|
| Andujar, Pablo | | Bautista Agut, Roberto | | Carreno Busta, Pablo | | Davidovich Fokina, Alejandro | | Martinez, Pedro | | Nadal, Rafael | | Ramos-Vinolas, Albert |
| | Regno Unito (1) |
|---|
| Evans, Daniel |
| | Stati Uniti (2) |
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| Fritz, Taylor | | Paul, Tommy |
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