Argentina (3) |
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Berlocq, Carlos | Del Potro, Juan Martin | Schwartzman, Diego |
| Australia (4) |
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Gavrilova, Daria | Kyrgios, Nick | Stosur, Samantha | Tomic, Bernard |
| Austria (1) |
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Thiem, Dominic |
| |
Brazil (2) |
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Bellucci, Thomaz | Monteiro, Thiago |
| Bulgaria (1) |
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Dimitrov, Grigor |
| | China (3) |
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Peng, Shuai | Wang, Qiang | Zhang, Shuai |
|
Croatia (4) |
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Cilic, Marin | Karlovic, Ivo | Lucic-Baroni, Mirjana | Vekic, Donna |
| Czech Republic (6) |
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Berdych, Tomas | Pliskova, Karolina | Safarova, Lucie | Siniakova, Katerina | Strycova, Barbora | Vesely, Jiri |
| Estonia (1) |
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Kontaveit, Anett |
| France (8) |
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Cornet, Alizé | Garcia, Caroline | Mahut, Nicolas | Mannarino, Adrian | Mladenovic, Kristina | Paire, Benoit | Pouille, Lucas | Simon, Gilles |
|
Germany (10) |
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Barthel, Mona | Goerges, Julia | Haas, Tommy | Kerber, Angelique | Mayer, Florian | Petkovic, Andrea | Siegemund, Laura | Struff, Jan-Lennard | Zverev, Alexander | Zverev, Mischa |
| | Italy (8) |
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Berrettini, Matteo | Chiesa, Deborah | Errani, Sara | Fognini, Fabio | Mager, Gianluca | Napolitano, Stefano | Seppi, Andreas | Vinci, Roberta |
| Japan (3) |
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Doi, Misaki | Nishikori, Kei | Osaka, Naomi |
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Kazakhstan (2) |
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Putintseva, Yulia | Shvedova, Yaroslava |
| Latvia (2) |
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Ostapenko, Jelena | Sevastova, Anastasija |
| Mexico (1) |
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Escobedo, Ernesto |
| Netherlands (2) |
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Bertens, Kiki | Haase, Robin |
|
| Puerto Rico (1) |
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Puig, Monica |
| Romania (3) |
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Begu, Irina-Camelia | Halep, Simona | Niculescu, Monica |
| Russia (6) |
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Kasatkina, Daria | Kuznetsova, Svetlana | Makarova, Ekaterina | Pavlyuchenkova, Anastasia | Sharapova, Maria | Vesnina, Elena |
|
Serbia (3) |
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Djokovic, Novak | Jankovic, Jelena | Troicki, Viktor |
| Slovakia (1) |
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Cibulkova, Dominika |
| Slovenia (1) |
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Bedene, Aljaz |
| South Africa (1) |
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Anderson, Kevin |
|
Spain (10) |
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Almagro, Nicolas | Bautista Agut, Roberto | Carreno Busta, Pablo | Ferrer, David | Lopez, Feliciano | Muguruza, Garbiñe | Nadal, Rafael | Ramos-Vinolas, Albert | Suárez Navarro, Carla | Verdasco, Fernando |
| Switzerland (2) |
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Bacsinszky, Timea | Wawrinka, Stan |
| Ukraine (3) |
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Dolgopolov, Alexandr | Svitolina, Elina | Tsurenko, Lesia |
| United Kingdom (4) |
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Edmund, Kyle | Evans, Daniel | Konta, Johanna | Murray, Andy |
|
United States (13) |
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Bellis, CiCi | Davis, Lauren | Donaldson, Jared | Harrison, Ryan | Isner, John | Keys, Madison | McHale, Christina | Querrey, Sam | Riske, Alison | Rogers, Shelby | Sock, Jack | Williams, Venus | Young, Donald |
| |