| Argentina (9) |
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| Baez, Sebastian | | Burruchaga, Roman Andres | | Cerundolo, Francisco | | Cerundolo, Juan Manuel | | Etcheverry, Tomas Martin | | Navone, Mariano | | Tirante, Thiago Agustin | | Trungelliti, Marco | | Ugo Carabelli, Camilo |
| | Austrálie (8) |
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| De Minaur, Alex | | Duckworth, James | | Hijikata, Rinky | | Kokkinakis, Thanasi | | Popyrin, Alexei | | Sweeny, Dane | | Vukic, Aleksandar | | Walton, Adam |
| | Rakousko (1) |
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| Ofner, Sebastian |
| | Belgie (3) |
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| Bergs, Zizou | | Blockx, Alexander | | Collignon, Raphael |
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| Bosna a Hercegovina (1) |
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| Dzumhur, Damir |
| | Brazílie (1) |
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| Fonseca, Joao |
| | Bulharsko (1) |
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| Dimitrov, Grigor |
| | Kanada (3) |
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| Auger-Aliassime, Felix | | Diallo, Gabriel | | Shapovalov, Denis |
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| Chile (1) |
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| Tabilo, Alejandro |
| | | Kolumbie (1) |
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| Mejia, Nicolas |
| | Chorvatsko (2) |
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| Cilic, Marin | | Prizmic, Dino |
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| Česká republika (4) |
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| Kopriva, Vit | | Lehecka, Jiri | | Mensik, Jakub | | Svrcina, Dalibor |
| | | Francie (15) |
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| Assche, Luca Van | | Atmane, Terence | | Bonzi, Benjamin | | Droguet, Titouan | | Fils, Arthur | | Gaston, Hugo | | Halys, Quentin | | Humbert, Ugo | | Jacquet, Kyrian | | Mannarino, Adrian | | Moutet, Corentin | | Mpetshi Perricard, Giovanni | | Muller, Alexandre | | Rinderknech, Arthur | | Royer, Valentin |
| | Německo (4) |
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| Altmaier, Daniel | | Hanfmann, Yannick | | Struff, Jan-Lennard | | Zverev, Alexander |
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| Řecko (1) |
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| Tsitsipas, Stefanos |
| | Maďarsko (2) |
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| Fucsovics, Marton | | Marozsan, Fabian |
| | Itálie (7) |
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| Arnaldi, Matteo | | Bellucci, Mattia | | Berrettini, Matteo | | Cobolli, Flavio | | Darderi, Luciano | | Sinner, Jannik | | Sonego, Lorenzo |
| | Japonsko (2) |
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| Mochizuki, Shintaro | | Shimabukuro, Sho |
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| Kazachstán (2) |
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| Bublik, Alexander | | Shevchenko, Alexander |
| | | Nizozemsko (3) |
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| Griekspoor, Tallon | | Jong, Jesper de | | Zandschulp, Botic van de |
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| Paraguay (1) |
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| Vallejo, Adolfo Daniel |
| | | Polsko (2) |
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| Hurkacz, Hubert | | Majchrzak, Kamil |
| | Portugalsko (2) |
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| Borges, Nuno | | Faria, Jaime |
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| Rusko (4) |
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| Khachanov, Karen | | Medvedev, Daniil | | Rublev, Andrey | | Safiullin, Roman |
| | Srbsko (3) |
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| Djokovic, Novak | | Kecmanovic, Miomir | | Medjedovic, Hamad |
| | Slovensko (1) |
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| Molcan, Alex |
| | Jižní Korea (1) |
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| Kwon, Soonwoo |
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| Španělsko (7) |
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| Bautista Agut, Roberto | | Carreno Busta, Pablo | | Davidovich Fokina, Alejandro | | Jodar, Rafael | | Landaluce, Martin | | Merida, Daniel | | Munar, Jaume |
| | Švýcarsko (1) |
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| Wawrinka, Stan |
| | Velká Británie (12) |
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| Basing, Max | | Choinski, Jan | | Draper, Jack | | Fearnley, Jacob | | Fery, Arthur | | Gill, Felix | | Harris, Billy | | Norrie, Cameron | | Pinnington Jones, Jack | | Samuel, Toby | | Tarvet, Oliver | | Wendelken, Harry |
| | USA (18) |
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| Boyer, Tristan | | Brooksby, Jenson | | Damm, Martin | | Fritz, Taylor | | Giron, Marcos | | Kovacevic, Aleksandar | | Kypson, Patrick | | McDonald, Mackenzie | | Michelsen, Alex | | Nakashima, Brandon | | Nava, Emilio | | Paul, Tommy | | Quinn, Ethan | | Shelton, Ben | | Svajda, Zachary | | Tiafoe, Frances | | Tien, Learner | | Zheng, Michael |
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