| Argentina (8) |
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| Bagnis, Facundo | | Del Potro, Juan Martin | | Delbonis, Federico | | Monaco, Juan | | Olivo, Renzo | | Pella, Guido | | Schwartzman, Diego | | Zeballos, Horacio |
| | Australia (6) |
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| Gavrilova, Daria | | Kyrgios, Nick | | Stosur, Samantha | | Thompson, Jordan | | Tomic, Bernard | | Tomljanovic, Ajla |
| | Austria (1) |
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| Thiem, Dominic |
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| Belgium (3) |
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| Flipkens, Kirsten | | Goffin, David | | Wickmayer, Yanina |
| | Bosnia-Herzegovina (1) |
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| Dzumhur, Damir |
| | Brazil (2) |
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| Bellucci, Thomaz | | Monteiro, Thiago |
| | Bulgaria (2) |
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| Dimitrov, Grigor | | Pironkova, Tsvetana |
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| Canada (2) |
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| Bouchard, Eugenie | | Pospisil, Vasek |
| | China (3) |
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| Peng, Shuai | | Wang, Qiang | | Zhang, Shuai |
| | Colombia (2) |
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| Duque-Mariño, Mariana | | Giraldo, Santiago |
| | Croatia (6) |
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| Cilic, Marin | | Coric, Borna | | Karlovic, Ivo | | Konjuh, Ana | | Lucic-Baroni, Mirjana | | Vekic, Donna |
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| Czech Republic (7) |
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| Berdych, Tomas | | Pliskova, Karolina | | Pliskova, Kristyna | | Safarova, Lucie | | Siniakova, Katerina | | Strycova, Barbora | | Vesely, Jiri |
| | Denmark (1) |
|---|
| Wozniacki, Caroline |
| | Estonia (1) |
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| Kontaveit, Anett |
| | France (14) |
|---|
| Benneteau, Julien | | Chardy, Jeremy | | Dodin, Oceane | | Garcia, Caroline | | Herbert, Pierre-Hugues | | Mahut, Nicolas | | Mannarino, Adrian | | Mladenovic, Kristina | | Monfils, Gael | | Paire, Benoit | | Parmentier, Pauline | | Pouille, Lucas | | Robert, Stephane | | Tsonga, Jo-Wilfried |
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| Georgia (1) |
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| Basilashvili, Nikoloz |
| | Germany (13) |
|---|
| Barthel, Mona | | Beck, Annika | | Brown, Dustin | | Goerges, Julia | | Gojowczyk, Peter | | Kerber, Angelique | | Kohlschreiber, Philipp | | Maria, Tatjana | | Petkovic, Andrea | | Siegemund, Laura | | Struff, Jan-Lennard | | Zverev, Alexander | | Zverev, Mischa |
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| Italy (7) |
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| Errani, Sara | | Fognini, Fabio | | Gaio, Federico | | Giorgi, Camila | | Lorenzi, Paolo | | Schiavone, Francesca | | Vinci, Roberta |
| | Japan (6) |
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| Doi, Misaki | | Nara, Kurumi | | Nishikori, Kei | | Nishioka, Yoshihito | | Osaka, Naomi | | Ozaki, Risa |
| | Kazakhstan (3) |
|---|
| Kukushkin, Mikhail | | Putintseva, Yulia | | Shvedova, Yaroslava |
| | Latvia (2) |
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| Ostapenko, Jelena | | Sevastova, Anastasija |
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| Luxembourg (2) |
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| Minella, Mandy | | Muller, Gilles |
| | | Montenegro (1) |
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| Kovinic, Danka |
| | Netherlands (2) |
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| Bertens, Kiki | | Haase, Robin |
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| Poland (2) |
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| Linette, Magda | | Radwanska, Agnieszka |
| | Portugal (2) |
|---|
| Elias, Gastao | | Sousa, Joao |
| | Puerto Rico (1) |
|---|
| Puig, Monica |
| | Romania (6) |
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| Begu, Irina-Camelia | | Cirstea, Sorana | | Copil, Marius | | Halep, Simona | | Niculescu, Monica | | Tig, Patricia Maria |
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| Russia (12) |
|---|
| Kasatkina, Daria | | Khachanov, Karen | | Kravchuk, Konstantin | | Kuznetsov, Andrey | | Kuznetsova, Svetlana | | Makarova, Ekaterina | | Medvedev, Daniil | | Pavlyuchenkova, Anastasia | | Rodina, Evgeniya | | Tursunov, Dmitry | | Vesnina, Elena | | Youzhny, Mikhail |
| | Serbia (4) |
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| Djokovic, Novak | | Jankovic, Jelena | | Lajovic, Dusan | | Troicki, Viktor |
| | Slovakia (2) |
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| Cibulkova, Dominika | | Klizan, Martin |
| | South Africa (1) |
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| Anderson, Kevin |
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| Spain (13) |
|---|
| Arruabarrena, Lara | | Bautista Agut, Roberto | | Carreno Busta, Pablo | | Garcia-Lopez, Guillermo | | Granollers, Marcel | | Lopez, Feliciano | | Muguruza, Garbiñe | | Nadal, Rafael | | Ramos-Vinolas, Albert | | Robredo, Tommy | | Sorribes Tormo, Sara | | Suárez Navarro, Carla | | Verdasco, Fernando |
| | Sweden (2) |
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| Larsson, Johanna | | Ymer, Elias |
| | Switzerland (6) |
|---|
| Bacsinszky, Timea | | Bencic, Belinda | | Federer, Roger | | Golubic, Viktorija | | Laaksonen, Henri | | Wawrinka, Stan |
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| | Ukraine (4) |
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| Bondarenko, Kateryna | | Dolgopolov, Alexandr | | Svitolina, Elina | | Tsurenko, Lesia |
| | United Kingdom (5) |
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| Edmund, Kyle | | Evans, Daniel | | Konta, Johanna | | Murray, Andy | | Watson, Heather |
| | United States (30) |
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| Bellis, CiCi | | Brady, Jennifer | | Brengle, Madison | | Chirico, Louisa | | Collins, Danielle | | Davis, Lauren | | Day, Kayla | | Falconi, Irina | | Fratangelo, Bjorn | | Fritz, Taylor | | Gibbs, Nicole | | Harrison, Ryan | | Isner, John | | Johnson, Steve | | Keys, Madison | | King, Vania | | Kozlov, Stefan | | Lepchenko, Varvara | | Mattek-Sands, Bethanie | | McHale, Christina | | Opelka, Reilly | | Querrey, Sam | | Riske, Alison | | Rogers, Shelby | | Sock, Jack | | Tiafoe, Frances | | Townsend, Taylor | | Vandeweghe, Coco | | Williams, Venus | | Young, Donald |
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