| Argentina (6) |
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| Bagnis, Facundo | | Coria, Federico | | Delbonis, Federico | | Pella, Guido | | Schwartzman, Diego | | Trungelliti, Marco |
| | Austrálie (7) |
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| De Minaur, Alex | | Duckworth, James | | Kyrgios, Nick | | Millman, John | | Popyrin, Alexei | | Purcell, Max | | Thompson, Jordan |
| | Bělorusko (2) |
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| Gerasimov, Egor | | Ivashka, Ilya |
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| Brazílie (1) |
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| Monteiro, Thiago |
| | Bulharsko (1) |
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| Dimitrov, Grigor |
| | Kanada (3) |
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| Auger-Aliassime, Felix | | Pospisil, Vasek | | Shapovalov, Denis |
| | Chile (1) |
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| Garin, Christian |
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| Chorvatsko (2) |
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| Cilic, Marin | | Karlovic, Ivo |
| | Česká republika (1) |
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| Vesely, Jiri |
| | | Finsko (1) |
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| Ruusuvuori, Emil |
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| Francie (13) |
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| Chardy, Jeremy | | Gasquet, Richard | | Halys, Quentin | | Herbert, Pierre-Hugues | | Hoang, Antoine | | Humbert, Ugo | | Mannarino, Adrian | | Monfils, Gael | | Moutet, Corentin | | Paire, Benoit | | Pouille, Lucas | | Rinderknech, Arthur | | Tsonga, Jo-Wilfried |
| | Gruzie (1) |
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| Basilashvili, Nikoloz |
| | Německo (8) |
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| Gojowczyk, Peter | | Hanfmann, Yannick | | Koepfer, Dominik | | Kohlschreiber, Philipp | | Marterer, Maximilian | | Otte, Oscar | | Struff, Jan-Lennard | | Zverev, Alexander |
| | Řecko (1) |
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| Tsitsipas, Stefanos |
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| Maďarsko (1) |
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| Fucsovics, Marton |
| | Itálie (10) |
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| Berrettini, Matteo | | Caruso, Salvatore | | Cecchinato, Marco | | Fognini, Fabio | | Mager, Gianluca | | Musetti, Lorenzo | | Seppi, Andreas | | Sinner, Jannik | | Sonego, Lorenzo | | Travaglia, Stefano |
| | Japonsko (4) |
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| Daniel, Taro | | Nishikori, Kei | | Nishioka, Yoshihito | | Sugita, Yuichi |
| | Kazachstán (2) |
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| Bublik, Alexander | | Kukushkin, Mikhail |
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| Litva (1) |
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| Berankis, Ricardas |
| | Mexiko (1) |
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| Escobedo, Ernesto |
| | | Nizozemsko (2) |
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| Griekspoor, Tallon | | Zandschulp, Botic van de |
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| | Polsko (2) |
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| Hurkacz, Hubert | | Majchrzak, Kamil |
| | Rusko (5) |
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| Donskoy, Evgeny | | Karatsev, Aslan | | Khachanov, Karen | | Medvedev, Daniil | | Rublev, Andrey |
| | Srbsko (5) |
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| Djere, Laslo | | Djokovic, Novak | | Kecmanovic, Miomir | | Krajinovic, Filip | | Lajovic, Dusan |
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| Slovensko (2) |
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| Gombos, Norbert | | Molcan, Alex |
| | Jihoafrická republika (2) |
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| Anderson, Kevin | | Harris, Lloyd |
| | Jižní Korea (1) |
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| Kwon, Soonwoo |
| | Španělsko (12) |
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| Alcaraz, Carlos | | Andujar, Pablo | | Bautista Agut, Roberto | | Carballes Baena, Roberto | | Carreno Busta, Pablo | | Davidovich Fokina, Alejandro | | Lopez, Feliciano | | Martinez, Pedro | | Munar, Jaume | | Ramos-Vinolas, Albert | | Taberner, Carlos | | Zapata Miralles, Bernabe |
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| | Švýcarsko (1) |
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| Laaksonen, Henri |
| | | Velká Británie (3) |
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| Evans, Daniel | | Murray, Andy | | Norrie, Cameron |
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| USA (20) |
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| Brooksby, Jenson | | Cressy, Maxime | | Eubanks, Christopher | | Fritz, Taylor | | Giron, Marcos | | Isner, John | | Johnson, Steve | | Korda, Sebastian | | Kudla, Denis | | McDonald, Mackenzie | | Nakashima, Brandon | | Nava, Emilio | | Opelka, Reilly | | Paul, Tommy | | Querrey, Sam | | Riffice, Sam | | Sandgren, Tennys | | Sock, Jack | | Svajda, Zachary | | Tiafoe, Frances |
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