| Argentinië (9) |
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| Baez, Sebastian | | Cerundolo, Francisco | | Cerundolo, Juan Manuel | | Comesana, Francisco | | Etcheverry, Tomas Martin | | Gomez, Federico Agustin | | Navone, Mariano | | Tirante, Thiago Agustin | | Ugo Carabelli, Camilo |
| | Australië (9) |
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| De Minaur, Alex | | Duckworth, James | | Hijikata, Rinky | | O'Connell, Christopher | | Popyrin, Alexei | | Schoolkate, Tristan | | Thompson, Jordan | | Vukic, Aleksandar | | Walton, Adam |
| | Oostenrijk (2) |
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| Misolic, Filip | | Ofner, Sebastian |
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| | Bosnië-Herzegovina (1) |
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| Dzumhur, Damir |
| | Brazilië (2) |
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| Fonseca, Joao | | Monteiro, Thiago |
| | Bulgarije (1) |
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| Dimitrov, Grigor |
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| Canada (3) |
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| Auger-Aliassime, Felix | | Diallo, Gabriel | | Shapovalov, Denis |
| | Chili (2) |
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| Jarry, Nicolas | | Tabilo, Alejandro |
| | | Colombia (1) |
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| Galan, Daniel Elahi |
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| | Tsjechië (4) |
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| Kopriva, Vit | | Lehecka, Jiri | | Machac, Tomas | | Mensik, Jakub |
| | Denemarken (2) |
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| Moller, Elmer | | Rune, Holger |
| | Finland (1) |
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| Ruusuvuori, Emil |
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| Frankrijk (18) |
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| Atmane, Terence | | Blanchet, Ugo | | Bonzi, Benjamin | | Cazaux, Arthur | | Fils, Arthur | | Gasquet, Richard | | Gaston, Hugo | | Halys, Quentin | | Herbert, Pierre-Hugues | | Humbert, Ugo | | Jacquet, Kyrian | | Monfils, Gael | | Moutet, Corentin | | Mpetshi Perricard, Giovanni | | Muller, Alexandre | | Rinderknech, Arthur | | Royer, Valentin | | Tabur, Clement |
| | Georgië (1) |
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| Basilashvili, Nikoloz |
| | Duitsland (5) |
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| Altmaier, Daniel | | Hanfmann, Yannick | | Marterer, Maximilian | | Struff, Jan-Lennard | | Zverev, Alexander |
| | Griekenland (1) |
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| Tsitsipas, Stefanos |
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| Hongarije (2) |
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| Fucsovics, Marton | | Marozsan, Fabian |
| | Italië (11) |
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| Arnaldi, Matteo | | Bellucci, Mattia | | Cobolli, Flavio | | Darderi, Luciano | | Gigante, Matteo | | Musetti, Lorenzo | | Nardi, Luca | | Passaro, Francesco | | Sinner, Jannik | | Sonego, Lorenzo | | Zeppieri, Giulio |
| | Japan (1) |
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| Nishioka, Yoshihito |
| | Kazachstan (2) |
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| Bublik, Alexander | | Shevchenko, Alexander |
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| Libanon (1) |
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| Hassan, Benjamin |
| | Nederland (3) |
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| Griekspoor, Tallon | | Jong, Jesper de | | Zandschulp, Botic van de |
| | Noorwegen (1) |
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| Ruud, Casper |
| | Polen (2) |
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| Hurkacz, Hubert | | Majchrzak, Kamil |
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| Portugal (3) |
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| Borges, Nuno | | Faria, Jaime | | Rocha, Henrique |
| | Rusland (4) |
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| Khachanov, Karen | | Medvedev, Daniil | | Rublev, Andrey | | Safiullin, Roman |
| | Servië (5) |
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| Djere, Laslo | | Djokovic, Novak | | Kecmanovic, Miomir | | Lajovic, Dusan | | Medjedovic, Hamad |
| | Zuid-Afrika (1) |
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| Harris, Lloyd |
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| Spanje (8) |
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| Alcaraz, Carlos | | Bautista Agut, Roberto | | Carreno Busta, Pablo | | Davidovich Fokina, Alejandro | | Llamas Ruiz, Pablo | | Martinez, Pedro | | Munar, Jaume | | Ramos-Vinolas, Albert |
| | Zwitserland (1) |
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| Wawrinka, Stan |
| | Verenigd Koninkrijk (3) |
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| Draper, Jack | | Fearnley, Jacob | | Norrie, Cameron |
| | Verenigde Staten (15) |
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| Brooksby, Jenson | | Fritz, Taylor | | Giron, Marcos | | Korda, Sebastian | | Kovacevic, Aleksandar | | McDonald, Mackenzie | | Michelsen, Alex | | Nakashima, Brandon | | Nava, Emilio | | Opelka, Reilly | | Paul, Tommy | | Quinn, Ethan | | Shelton, Ben | | Tiafoe, Frances | | Tien, Learner |
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