| Аргентина (9) |
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| Baez, Sebastian | | Cerundolo, Francisco | | Cerundolo, Juan Manuel | | Comesana, Francisco | | Etcheverry, Tomas Martin | | Navone, Mariano | | Tirante, Thiago Agustin | | Trungelliti, Marco | | Ugo Carabelli, Camilo |
| | Австралия (3) |
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| De Minaur, Alex | | Popyrin, Alexei | | Walton, Adam |
| | Австрия (1) |
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| Ofner, Sebastian |
| | Бельгия (2) |
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| Bergs, Zizou | | Blockx, Alexander |
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| Босния и Герцеговина (1) |
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| Dzumhur, Damir |
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| Fonseca, Joao |
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| Dimitrov, Grigor |
| | Канада (3) |
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| Auger-Aliassime, Felix | | Diallo, Gabriel | | Shapovalov, Denis |
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| Чили (1) |
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| Tabilo, Alejandro |
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| Cilic, Marin | | Prizmic, Dino |
| | Чехия (4) |
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| Kopriva, Vit | | Lehecka, Jiri | | Machac, Tomas | | Mensik, Jakub |
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| | Франция (11) |
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| Atmane, Terence | | Bonzi, Benjamin | | Droguet, Titouan | | Fils, Arthur | | Humbert, Ugo | | Mannarino, Adrian | | Monfils, Gael | | Moutet, Corentin | | Muller, Alexandre | | Rinderknech, Arthur | | Royer, Valentin |
| | Грузия (1) |
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| Basilashvili, Nikoloz |
| | Германия (4) |
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| Altmaier, Daniel | | Hanfmann, Yannick | | Struff, Jan-Lennard | | Zverev, Alexander |
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| Греция (1) |
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| Tsitsipas, Stefanos |
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| Fucsovics, Marton | | Marozsan, Fabian |
| | Италия (8) |
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| Bellucci, Mattia | | Berrettini, Matteo | | Cina, Federico | | Cobolli, Flavio | | Darderi, Luciano | | Musetti, Lorenzo | | Sinner, Jannik | | Sonego, Lorenzo |
| | Казахстан (2) |
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| Bublik, Alexander | | Shevchenko, Alexander |
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| Vacherot, Valentin |
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| Griekspoor, Tallon | | Jong, Jesper de | | Zandschulp, Botic van de |
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| Budkov Kjaer, Nicolai | | Ruud, Casper |
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| Vallejo, Adolfo Daniel |
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| Hurkacz, Hubert |
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| Borges, Nuno | | Faria, Jaime |
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| Россия (3) |
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| Khachanov, Karen | | Medvedev, Daniil | | Rublev, Andrey |
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| Kecmanovic, Miomir | | Lajovic, Dusan |
| | Испания (7) |
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| Bautista Agut, Roberto | | Carreno Busta, Pablo | | Davidovich Fokina, Alejandro | | Jodar, Rafael | | Landaluce, Martin | | Merida, Daniel | | Munar, Jaume |
| | Великобритания (1) |
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| Norrie, Cameron |
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| Соединенные Штаты (12) |
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| Brooksby, Jenson | | Damm, Martin | | Giron, Marcos | | Kypson, Patrick | | Michelsen, Alex | | Nakashima, Brandon | | Nava, Emilio | | Opelka, Reilly | | Paul, Tommy | | Quinn, Ethan | | Shelton, Ben | | Tien, Learner |
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