| Argentina (8) |
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| Andreozzi, Guido | | Del Potro, Juan Martin | | Delbonis, Federico | | Mayer, Leonardo | | Pella, Guido | | Schwartzman, Diego | | Trungelliti, Marco | | Zeballos, Horacio |
| | Austrália (12) |
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| Barty, Ashleigh | | De Minaur, Alex | | Duckworth, James | | Ebden, Matthew | | Gavrilova, Daria | | Kyrgios, Nick | | Millman, John | | Stosur, Samantha | | Thompson, Jordan | | Tomic, Bernard | | Tomljanovic, Ajla | | Wallace, Isabelle |
| | Áustria (2) |
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| Haider-Maurer, Andreas | | Thiem, Dominic |
| | Bielorrússia (4) |
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| Azarenka, Victoria | | Ivashka, Ilya | | Sabalenka, Aryna | | Sasnovich, Aliaksandra |
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| Bélgica (6) |
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| Bemelmans, Ruben | | Flipkens, Kirsten | | Goffin, David | | Mertens, Elise | | Uytvanck, Alison Van | | Wickmayer, Yanina |
| | Bósnia Herzegovina (2) |
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| Basic, Mirza | | Dzumhur, Damir |
| | Brasil (2) |
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| Bellucci, Thomaz | | Dutra Silva, Rogerio |
| | Bulgária (1) |
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| Dimitrov, Grigor |
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| Canadá (3) |
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| Polansky, Peter | | Pospisil, Vasek | | Shapovalov, Denis |
| | | China (6) |
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| Duan, Ying-Ying | | Peng, Shuai | | Wang, Qiang | | Wang, Yafan | | Zhang, Shuai | | Zheng, Saisai |
| | Colômbia (2) |
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| Duque-Mariño, Mariana | | Giraldo, Santiago |
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| Croácia (6) |
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| Cilic, Marin | | Coric, Borna | | Karlovic, Ivo | | Konjuh, Ana | | Martic, Petra | | Vekic, Donna |
| | Chipre (1) |
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| Baghdatis, Marcos |
| | República Checa (12) |
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| Allertova, Denisa | | Berdych, Tomas | | Krejcikova, Barbora | | Kvitova, Petra | | Pavlasek, Adam | | Pliskova, Karolina | | Pliskova, Kristyna | | Safarova, Lucie | | Siniakova, Katerina | | Strycova, Barbora | | Vesely, Jiri | | Vondrousova, Marketa |
| | Dinamarca (1) |
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| Wozniacki, Caroline |
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| Egipto (1) |
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| Safwat, Mohamed |
| | Estónia (3) |
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| Kanepi, Kaia | | Kontaveit, Anett | | Zopp, Jurgen |
| | França (24) |
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| Barrere, Gregoire | | Benneteau, Julien | | Chardy, Jeremy | | Cornet, Alizé | | Dodin, Oceane | | Ferro, Fiona | | Garcia, Caroline | | Gasquet, Richard | | Georges, Myrtille | | Hemery, Calvin | | Herbert, Pierre-Hugues | | Hesse, Amandine | | Janvier, Maxime | | Mahut, Nicolas | | Mannarino, Adrian | | Mladenovic, Kristina | | Monfils, Gael | | Moutet, Corentin | | Paire, Benoit | | Paquet, Chloe | | Parmentier, Pauline | | Ponchet, Jessika | | Pouille, Lucas | | Simon, Gilles |
| | Geórgia (1) |
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| Basilashvili, Nikoloz |
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| Alemanha (15) |
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| Barthel, Mona | | Goerges, Julia | | Gojowczyk, Peter | | Kerber, Angelique | | Kohlschreiber, Philipp | | Maria, Tatjana | | Marterer, Maximilian | | Mayer, Florian | | Otte, Oscar | | Petkovic, Andrea | | Siegemund, Laura | | Struff, Jan-Lennard | | Witthoeft, Carina | | Zverev, Alexander | | Zverev, Mischa |
| | Grécia (2) |
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| Sakkari, Maria | | Tsitsipas, Stefano |
| | Hungria (2) |
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| Babos, Timea | | Fucsovics, Marton |
| | Índia (2) |
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| Bhambri, Yuki | | Gunneswaran, Prajnesh |
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| | Itália (11) |
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| Berrettini, Matteo | | Bolelli, Simone | | Cecchinato, Marco | | Chiesa, Deborah | | Errani, Sara | | Fabbiano, Thomas | | Fognini, Fabio | | Giorgi, Camila | | Lorenzi, Paolo | | Schiavone, Francesca | | Seppi, Andreas |
| | Japão (5) |
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| Nara, Kurumi | | Nishikori, Kei | | Nishioka, Yoshihito | | Osaka, Naomi | | Sugita, Yuichi |
| | Cazaquistão (3) |
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| Diyas, Zarina | | Kukushkin, Mikhail | | Putintseva, Yulia |
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| Letónia (3) |
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| Gulbis, Ernests | | Ostapenko, Jelena | | Sevastova, Anastasija |
| | Lituânia (1) |
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| Berankis, Ricardas |
| | Luxemburgo (2) |
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| Minella, Mandy | | Muller, Gilles |
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| Marrocos (1) |
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| Benchetrit, Elliot |
| | Holanda (4) |
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| Bertens, Kiki | | Haase, Robin | | Hogenkamp, Richel | | Rus, Arantxa |
| | | Paraguai (1) |
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| Cepede Royg, Veronica |
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| Polónia (3) |
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| Frech, Magdalena | | Hurkacz, Hubert | | Linette, Magda |
| | | Roménia (7) |
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| Begu, Irina-Camelia | | Bogdan, Ana | | Buzarnescu, Mihaela | | Cirstea, Sorana | | Copil, Marius | | Dulgheru, Alexandra | | Halep, Simona |
| | Rússia (12) |
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| Alexandrova, Ekaterina | | Donskoy, Evgeny | | Kasatkina, Daria | | Khachanov, Karen | | Kuznetsova, Svetlana | | Makarova, Ekaterina | | Medvedev, Daniil | | Pavlyuchenkova, Anastasia | | Sharapova, Maria | | Vesnina, Elena | | Vikhlyantseva, Natalia | | Youzhny, Mikhail |
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| Sérvia (5) |
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| Djere, Laslo | | Djokovic, Novak | | Krunic, Aleksandra | | Lajovic, Dusan | | Troicki, Viktor |
| | Eslováquia (7) |
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| Cibulkova, Dominika | | Klizan, Martin | | Kovalik, Jozef | | Kucova, Kristina | | Kuzmova, Viktoria | | Rybarikova, Magdalena | | Schmiedlova, Anna Karolina |
| | Eslovénia (3) |
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| Bedene, Aljaz | | Hercog, Polona | | Jakupovic, Dalila |
| | África do Sul (1) |
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| Anderson, Kevin |
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| Espanha (16) |
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| Andujar, Pablo | | Arruabarrena, Lara | | Bautista Agut, Roberto | | Carballes Baena, Roberto | | Carreno Busta, Pablo | | Ferrer, David | | Garcia Perez, Georgina | | Garcia-Lopez, Guillermo | | Lopez, Feliciano | | Muguruza, Garbiñe | | Munar, Jaume | | Nadal, Rafael | | Ramos-Vinolas, Albert | | Suárez Navarro, Carla | | Taberner, Carlos | | Verdasco, Fernando |
| | Suécia (3) |
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| Larsson, Johanna | | Peterson, Rebecca | | Ymer, Elias |
| | Suíça (4) |
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| Bencic, Belinda | | Golubic, Viktorija | | Voegele, Stefanie | | Wawrinka, Stan |
| | Taiwan (2) |
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| Hsieh, Su-Wei | | Lu, Yen-Hsun |
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| Tailândia (1) |
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| Kumkhum, Luksika |
| | | Ucrânia (5) |
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| Bondarenko, Kateryna | | Kozlova, Kateryna | | Stakhovsky, Sergiy | | Svitolina, Elina | | Tsurenko, Lesia |
| | Reino Unido (4) |
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| Edmund, Kyle | | Konta, Johanna | | Norrie, Cameron | | Watson, Heather |
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| Estados Unidos (30) |
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| Brady, Jennifer | | Brengle, Madison | | Collins, Danielle | | Dolehide, Caroline | | Donaldson, Jared | | Fritz, Taylor | | Harrison, Ryan | | Isner, John | | Johnson, Steve | | Kenin, Sofia | | Keys, Madison | | King, Vania | | Kudla, Denis | | Lepchenko, Varvara | | Mattek-Sands, Bethanie | | McHale, Christina | | Min, Grace | | Pera, Bernarda | | Querrey, Sam | | Riske, Alison | | Rubin, Noah | | Sandgren, Tennys | | Sock, Jack | | Stephens, Sloane | | Tiafoe, Frances | | Townsend, Taylor | | Vandeweghe, Coco | | Vickery, Sachia | | Williams, Serena | | Williams, Venus |
| | | Uzbequistão (1) |
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| Istomin, Denis |
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