| Argentina (7) |
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| Bagnis, Facundo | | Cerundolo, Francisco | | Coria, Federico | | Delbonis, Federico | | Londero, Juan Ignacio | | Pella, Guido | | Schwartzman, Diego |
| | Austrálie (6) |
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| De Minaur, Alex | | Duckworth, James | | Millman, John | | O'Connell, Christopher | | Popyrin, Alexei | | Thompson, Jordan |
| | Rakousko (1) |
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| Thiem, Dominic |
| | Bělorusko (1) |
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| Gerasimov, Egor |
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| | Brazílie (1) |
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| Monteiro, Thiago |
| | Bulharsko (1) |
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| Dimitrov, Grigor |
| | Kanada (2) |
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| Auger-Aliassime, Felix | | Raonic, Milos |
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| Chile (1) |
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| Garin, Christian |
| | Kolumbie (1) |
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| Galan, Daniel Elahi |
| | Chorvatsko (1) |
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| Cilic, Marin |
| | Česká republika (1) |
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| Vesely, Jiri |
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| Finsko (1) |
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| Ruusuvuori, Emil |
| | Francie (18) |
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| Barrere, Gregoire | | Bonzi, Benjamin | | Bourgue, Mathias | | Cazaux, Arthur | | Chardy, Jeremy | | Couacaud, Enzo | | Gasquet, Richard | | Gaston, Hugo | | Herbert, Pierre-Hugues | | Humbert, Ugo | | Mannarino, Adrian | | Monfils, Gael | | Moutet, Corentin | | Paire, Benoit | | Pouille, Lucas | | Rinderknech, Arthur | | Simon, Gilles | | 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 |
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| Řecko (1) |
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| Tsitsipas, Stefanos |
| | Maďarsko (1) |
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| Fucsovics, Marton |
| | Itálie (11) |
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| Berrettini, Matteo | | Caruso, Salvatore | | Cecchinato, Marco | | Fognini, Fabio | | Giannessi, Alessandro | | Mager, Gianluca | | Musetti, Lorenzo | | Seppi, Andreas | | Sinner, Jannik | | Sonego, Lorenzo | | Travaglia, Stefano |
| | Japonsko (4) |
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| Daniel, Taro | | Nishikori, Kei | | Nishioka, Yoshihito | | Uchiyama, Yasutaka |
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| Kazachstán (2) |
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| Bublik, Alexander | | Kukushkin, Mikhail |
| | Litva (1) |
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| Berankis, Ricardas |
| | | Nizozemsko (1) |
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| Zandschulp, Botic van de |
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| | Polsko (2) |
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| Hurkacz, Hubert | | Majchrzak, Kamil |
| | Portugalsko (1) |
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| Sousa, Joao |
| | Rusko (5) |
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| Karatsev, Aslan | | Khachanov, Karen | | Medvedev, Daniil | | Rublev, Andrey | | Safiullin, Roman |
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| Srbsko (5) |
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| Djere, Laslo | | Djokovic, Novak | | Kecmanovic, Miomir | | Krajinovic, Filip | | Lajovic, Dusan |
| | Slovensko (2) |
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| Gombos, Norbert | | Martin, Andrej |
| | Slovinsko (1) |
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| Bedene, Aljaz |
| | Jihoafrická republika (2) |
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| Anderson, Kevin | | Harris, Lloyd |
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| Jižní Korea (1) |
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| Kwon, Soonwoo |
| | Španělsko (15) |
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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 | | Nadal, Rafael | | Ramos-Vinolas, Albert | | Taberner, Carlos | | Verdasco, Fernando | | Vilella Martinez, Mario | | Zapata Miralles, Bernabe |
| | | Švýcarsko (2) |
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| Federer, Roger | | Laaksonen, Henri |
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| Tchaj-wan (1) |
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| Lu, Yen-Hsun |
| | Velká Británie (2) |
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| Evans, Daniel | | Norrie, Cameron |
| | USA (13) |
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| Brooksby, Jenson | | Fratangelo, Bjorn | | Fritz, Taylor | | Giron, Marcos | | Isner, John | | Johnson, Steve | | Korda, Sebastian | | McDonald, Mackenzie | | Opelka, Reilly | | Paul, Tommy | | Querrey, Sam | | Sandgren, Tennys | | Tiafoe, Frances |
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| Uzbekistán (1) |
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| Istomin, Denis |
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