| Argentinië (7) |
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| Del Potro, Juan Martin | | Delbonis, Federico | | Kicker, Nicolas | | Mayer, Leonardo | | Pella, Guido | | Schwartzman, Diego | | Zeballos, Horacio |
| | Australië (6) |
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| Barty, Ashleigh | | De Minaur, Alex | | Ebden, Matthew | | Gavrilova, Daria | | Kyrgios, Nick | | Stosur, Samantha |
| | Oostenrijk (1) |
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| Thiem, Dominic |
| | Wit-Rusland (3) |
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| Azarenka, Victoria | | Sabalenka, Aryna | | Sasnovich, Aliaksandra |
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| België (5) |
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| Bemelmans, Ruben | | Flipkens, Kirsten | | Mertens, Elise | | Uytvanck, Alison Van | | Wickmayer, Yanina |
| | Bosnië-Herzegovina (1) |
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| Dzumhur, Damir |
| | Brazilië (1) |
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| Haddad Maia, Beatriz |
| | Bulgarije (1) |
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| Dimitrov, Grigor |
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| Canada (6) |
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| Auger-Aliassime, Felix | | Bouchard, Eugenie | | Polansky, Peter | | Pospisil, Vasek | | Raonic, Milos | | Shapovalov, Denis |
| | China (3) |
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| Duan, Ying-Ying | | Wang, Qiang | | Zhang, Shuai |
| | Kroatië (5) |
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| Cilic, Marin | | Coric, Borna | | Karlovic, Ivo | | Martic, Petra | | Vekic, Donna |
| | Cyprus (1) |
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| Baghdatis, Marcos |
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| Tsjechië (8) |
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| Berdych, Tomas | | Kvitova, Petra | | Pliskova, Karolina | | Pliskova, Kristyna | | Siniakova, Katerina | | Strycova, Barbora | | Vesely, Jiri | | Vondrousova, Marketa |
| | Denemarken (1) |
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| Wozniacki, Caroline |
| | Dominicaanse Republiek (1) |
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| Estrella Burgos, Victor |
| | Estland (2) |
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| Kanepi, Kaia | | Kontaveit, Anett |
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| Frankrijk (13) |
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| Benneteau, Julien | | Chardy, Jeremy | | Cornet, Alizé | | Garcia, Caroline | | Herbert, Pierre-Hugues | | Mahut, Nicolas | | Mannarino, Adrian | | Mladenovic, Kristina | | Monfils, Gael | | Paire, Benoit | | Parmentier, Pauline | | Pouille, Lucas | | Simon, Gilles |
| | Georgië (1) |
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| Basilashvili, Nikoloz |
| | Duitsland (11) |
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| Barthel, Mona | | Goerges, Julia | | Gojowczyk, Peter | | Kerber, Angelique | | Kohlschreiber, Philipp | | Maria, Tatjana | | Marterer, Maximilian | | Struff, Jan-Lennard | | Witthoeft, Carina | | Zverev, Alexander | | Zverev, Mischa |
| | Griekenland (2) |
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| Sakkari, Maria | | Tsitsipas, Stefano |
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| Hongarije (2) |
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| Babos, Timea | | Fucsovics, Marton |
| | | | Italië (3) |
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| Berrettini, Matteo | | Fabbiano, Thomas | | Fognini, Fabio |
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| Japan (6) |
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| Daniel, Taro | | Nara, Kurumi | | Nishikori, Kei | | Nishioka, Yoshihito | | Osaka, Naomi | | Sugita, Yuichi |
| | Kazachstan (3) |
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| Diyas, Zarina | | Kukushkin, Mikhail | | Putintseva, Yulia |
| | Letland (2) |
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| Ostapenko, Jelena | | Sevastova, Anastasija |
| | Litouwen (1) |
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| Berankis, Ricardas |
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| Luxemburg (1) |
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| Muller, Gilles |
| | Mexico (1) |
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| Escobedo, Ernesto |
| | | Nederland (1) |
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| Bertens, Kiki |
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| Paraguay (1) |
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| Cepede Royg, Veronica |
| | Polen (2) |
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| Linette, Magda | | Radwanska, Agnieszka |
| | | Puerto Rico (1) |
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| Puig, Monica |
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| Roemenië (6) |
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| Begu, Irina-Camelia | | Buzarnescu, Mihaela | | Cirstea, Sorana | | Copil, Marius | | Halep, Simona | | Niculescu, Monica |
| | Rusland (14) |
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| Donskoy, Evgeny | | Kasatkina, Daria | | Khachanov, Karen | | Kuznetsova, Svetlana | | Makarova, Ekaterina | | Medvedev, Daniil | | Pavlyuchenkova, Anastasia | | Rublev, Andrey | | Sharapova, Maria | | Vesnina, Elena | | Vikhlyantseva, Natalia | | Youzhny, Mikhail | | Zhuk, Sofya | | Zvonareva, Vera |
| | Servië (6) |
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| Djere, Laslo | | Djokovic, Novak | | Krajinovic, Filip | | Krunic, Aleksandra | | Lajovic, Dusan | | Troicki, Viktor |
| | Slowakije (3) |
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| Cibulkova, Dominika | | Lacko, Lukas | | Rybarikova, Magdalena |
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| Zuid-Afrika (1) |
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| Anderson, Kevin |
| | Zuid-Korea (1) |
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| Chung, Hyeon |
| | Spanje (10) |
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| Arruabarrena, Lara | | Bautista Agut, Roberto | | Carreno Busta, Pablo | | Ferrer, David | | Lopez, Feliciano | | Muguruza, Garbiñe | | Ramos-Vinolas, Albert | | Sorribes Tormo, Sara | | Suárez Navarro, Carla | | Verdasco, Fernando |
| | Zwitserland (3) |
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| Bacsinszky, Timea | | Bencic, Belinda | | Federer, Roger |
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| | Oekraïne (2) |
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| Svitolina, Elina | | Tsurenko, Lesia |
| | Verenigd Koninkrijk (4) |
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| Edmund, Kyle | | Konta, Johanna | | Norrie, Cameron | | Watson, Heather |
| | Verenigde Staten (35) |
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| Anisimova, Amanda | | Bellis, CiCi | | Brady, Jennifer | | Brengle, Madison | | Collins, Danielle | | Davis, Lauren | | Day, Kayla | | Dolehide, Caroline | | Donaldson, Jared | | Fritz, Taylor | | Harrison, Ryan | | Isner, John | | Johnson, Steve | | Kenin, Sofia | | Keys, Madison | | King, Evan | | Klahn, Bradley | | Krueger, Mitchell | | Lepchenko, Varvara | | Liu, Claire | | McHale, Christina | | Opelka, Reilly | | Querrey, Sam | | Rogers, Shelby | | Sandgren, Tennys | | Smyczek, Tim | | Sock, Jack | | Stephens, Sloane | | Tiafoe, Frances | | Townsend, Taylor | | Vandeweghe, Coco | | Vickery, Sachia | | Williams, Serena | | Williams, Venus | | Young, Donald |
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| | Oezbekistan (1) |
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| Istomin, Denis |
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