| Argentina (7) |
|---|
| Bagnis, Facundo | | Berlocq, Carlos | | Del Potro, Juan Martin | | Kicker, Nicolas | | Olivo, Renzo | | Schwartzman, Diego | | Zeballos, Horacio |
| | Australia (10) |
|---|
| Barty, Ashleigh | | Gavrilova, Daria | | Kasatkina, Daria | | Kokkinakis, Thanasi | | Kyrgios, Nick | | Millman, John | | Rodionova, Arina | | Thompson, Jordan | | Tomic, Bernard | | Whittington, Andrew |
| | Austria (3) |
|---|
| Haider-Maurer, Andreas | | Ofner, Sebastian | | Thiem, Dominic |
| | Belarus (3) |
|---|
| Azarenka, Victoria | | Sabalenka, Aryna | | Sasnovich, Aliaksandra |
|
| Belgium (7) |
|---|
| Bemelmans, Ruben | | Darcis, Steve | | Flipkens, Kirsten | | Mertens, Elise | | Uytvanck, Alison Van | | Wickmayer, Yanina | | Zanevska, Maryna |
| | Bosnia and Herzegovina (1) |
|---|
| Dzumhur, Damir |
| | Brasil (4) |
|---|
| Bellucci, Thomaz | | Dutra Silva, Rogerio | | Haddad Maia, Beatriz | | Monteiro, Thiago |
| | Bulgaria (2) |
|---|
| Dimitrov, Grigor | | Pironkova, Tsvetana |
|
| Canada (6) |
|---|
| Abanda, Francoise | | Andreescu, Bianca | | Bouchard, Eugenie | | Pospisil, Vasek | | Raonic, Milos | | Shapovalov, Denis |
| | Chile (2) |
|---|
| Garin, Christian | | Jarry, Nicolas |
| | China (6) |
|---|
| Duan, Ying-Ying | | Han, Xinyun | | Peng, Shuai | | Wang, Qiang | | Zhang, Shuai | | Zheng, Saisai |
| | Croatia (7) |
|---|
| Cilic, Marin | | Coric, Borna | | Karlovic, Ivo | | Konjuh, Ana | | Lucic-Baroni, Mirjana | | Martic, Petra | | Vekic, Donna |
|
| Cyprus (1) |
|---|
| Baghdatis, Marcos |
| | Czech Republic (12) |
|---|
| Allertova, Denisa | | Berdych, Tomas | | Kvitova, Petra | | Pavlasek, Adam | | Pliskova, Karolina | | Pliskova, Kristyna | | Rosol, Lukas | | Safarova, Lucie | | Siniakova, Katerina | | Strycova, Barbora | | Vesely, Jiri | | Vondrousova, Marketa |
| | Denmark (1) |
|---|
| Wozniacki, Caroline |
| | Dominican Republic (1) |
|---|
| Estrella Burgos, Victor |
|
| Estonia (1) |
|---|
| Kontaveit, Anett |
| | France (16) |
|---|
| Benneteau, Julien | | Chardy, Jeremy | | Cornet, Alizé | | Dodin, Oceane | | Garcia, Caroline | | Gasquet, Richard | | Herbert, Pierre-Hugues | | Mahut, Nicolas | | Mannarino, Adrian | | Mladenovic, Kristina | | Monfils, Gael | | Paire, Benoit | | Parmentier, Pauline | | Pouille, Lucas | | Simon, Gilles | | Tsonga, Jo-Wilfried |
| | Georgia (1) |
|---|
| Basilashvili, Nikoloz |
| | Germany (17) |
|---|
| Barthel, Mona | | Beck, Annika | | Brands, Daniel | | Brown, Dustin | | Goerges, Julia | | Gojowczyk, Peter | | Haas, Tommy | | Kerber, Angelique | | Kohlschreiber, Philipp | | Lisicki, Sabine | | Maria, Tatjana | | Mayer, Florian | | Petkovic, Andrea | | Struff, Jan-Lennard | | Witthoeft, Carina | | Zverev, Alexander | | Zverev, Mischa |
|
| Greece (2) |
|---|
| Sakkari, Maria | | Tsitsipas, Stefano |
| | Hungary (2) |
|---|
| Babos, Timea | | Fucsovics, Marton |
| | | Italy (11) |
|---|
| Bolelli, Simone | | Cecchinato, Marco | | Errani, Sara | | Fabbiano, Thomas | | Fognini, Fabio | | Giorgi, Camila | | Lorenzi, Paolo | | Schiavone, Francesca | | Seppi, Andreas | | Travaglia, Stefano | | Vinci, Roberta |
|
| Japan (8) |
|---|
| Daniel, Taro | | Doi, Misaki | | Hibino, Nao | | Nara, Kurumi | | Nishikori, Kei | | Osaka, Naomi | | Ozaki, Risa | | Sugita, Yuichi |
| | Kazakhstan (4) |
|---|
| Bublik, Alexander | | Diyas, Zarina | | Kukushkin, Mikhail | | Putintseva, Yulia |
| | Latvia (3) |
|---|
| Gulbis, Ernests | | Ostapenko, Jelena | | Sevastova, Anastasija |
| | Lithuania (1) |
|---|
| Berankis, Ricardas |
|
| Luxembourg (2) |
|---|
| Minella, Mandy | | Muller, Gilles |
| | Mexico (1) |
|---|
| Escobedo, Ernesto |
| | | Montenegro (1) |
|---|
| Kovinic, Danka |
|
| Netherlands (3) |
|---|
| Bertens, Kiki | | Haase, Robin | | Hogenkamp, Richel |
| | New Zealand (1) |
|---|
| Erakovic, Marina |
| | Paraguay (1) |
|---|
| Cepede Royg, Veronica |
| | Poland (3) |
|---|
| Janowicz, Jerzy | | Linette, Magda | | Radwanska, Agnieszka |
|
| | Puerto Rico (1) |
|---|
| Puig, Monica |
| | Romania (6) |
|---|
| Begu, Irina-Camelia | | Bogdan, Ana | | Cirstea, Sorana | | Copil, Marius | | Halep, Simona | | Niculescu, Monica |
| | Russia (17) |
|---|
| Alexandrova, Ekaterina | | Blinkova, Anna | | Donskoy, Evgeny | | Khachanov, Karen | | Khromacheva, Irina | | Kuznetsov, Andrey | | Kuznetsova, Svetlana | | Makarova, Ekaterina | | Medvedev, Daniil | | Pavlyuchenkova, Anastasia | | Potapova, Anastasia | | Rodina, Evgeniya | | Rublev, Andrey | | Tursunov, Dmitry | | Vesnina, Elena | | Vikhlyantseva, Natalia | | Youzhny, Mikhail |
|
| Serbia (5) |
|---|
| Djokovic, Novak | | Jankovic, Jelena | | Lajovic, Dusan | | Tipsarevic, Janko | | Troicki, Viktor |
| | Slovakia (6) |
|---|
| Cepelova, Jana | | Cibulkova, Dominika | | Gombos, Norbert | | Klizan, Martin | | Kucova, Kristina | | Rybarikova, Magdalena |
| | Slovenia (2) |
|---|
| Bedene, Aljaz | | Hercog, Polona |
| | South Africa (1) |
|---|
| Anderson, Kevin |
|
| Spain (11) |
|---|
| Arruabarrena, Lara | | Bautista Agut, Roberto | | Ferrer, David | | Granollers, Marcel | | Lopez, Feliciano | | Muguruza, Garbiñe | | Nadal, Rafael | | Ramos-Vinolas, Albert | | Sorribes Tormo, Sara | | Suárez Navarro, Carla | | Verdasco, Fernando |
| | Sweden (1) |
|---|
| Larsson, Johanna |
| | Swiss (5) |
|---|
| Bacsinszky, Timea | | Federer, Roger | | Golubic, Viktorija | | Laaksonen, Henri | | Wawrinka, Stan |
| | Taiwan (3) |
|---|
| Chang, Kai-Chen | | Hsieh, Su-Wei | | Lu, Yen-Hsun |
|
| Tunisia (2) |
|---|
| Jabeur, Ons | | Jaziri, Malek |
| | Ukraine (6) |
|---|
| Bondarenko, Kateryna | | Dolgopolov, Alexandr | | Marchenko, Illya | | Stakhovsky, Sergiy | | Svitolina, Elina | | Tsurenko, Lesia |
| | United Kingdom (11) |
|---|
| Boulter, Katie | | Broady, Naomi | | Edmund, Kyle | | Klein, Brydan | | Konta, Johanna | | Murray, Andy | | Norrie, Cameron | | Robson, Laura | | Ward, Alexander | | Ward, James | | Watson, Heather |
| | United States (24) |
|---|
| Bellis, CiCi | | Boserup, Julia | | Brady, Jennifer | | Brengle, Madison | | Davis, Lauren | | Donaldson, Jared | | Falconi, Irina | | Fritz, Taylor | | Harrison, Ryan | | Isner, John | | Johnson, Steve | | Keys, Madison | | Lepchenko, Varvara | | Mattek-Sands, Bethanie | | McHale, Christina | | Querrey, Sam | | Riske, Alison | | Rogers, Shelby | | Sock, Jack | | Stephens, Sloane | | Tiafoe, Frances | | Vandeweghe, Coco | | Williams, Venus | | Young, Donald |
|
| Uzbekistan (1) |
|---|
| Istomin, Denis |
|