| Argentina (4) |
|---|
| Del Potro, Juan Martin | | Delbonis, Federico | | Mayer, Leonardo | | Schwartzman, Diego |
| | Australien (4) |
|---|
| Barty, Ashleigh | | Gavrilova, Daria | | Stosur, Samantha | | Tomljanovic, Ajla |
| | | Hviderusland (2) |
|---|
| Azarenka, Victoria | | Sabalenka, Aryna |
|
| Belgien (2) |
|---|
| Goffin, David | | Uytvanck, Alison Van |
| | Bosnien og Herzegovina (1) |
|---|
| Dzumhur, Damir |
| | Bulgarien (1) |
|---|
| Dimitrov, Grigor |
| | Canada (1) |
|---|
| Shapovalov, Denis |
|
| | Kina (2) |
|---|
| Peng, Shuai | | Zhang, Shuai |
| | Kroatien (4) |
|---|
| Cilic, Marin | | Coric, Borna | | Martic, Petra | | Vekic, Donna |
| | Tjekkiet (3) |
|---|
| Berdych, Tomas | | Pliskova, Karolina | | Strycova, Barbora |
|
| Danmark (1) |
|---|
| Wozniacki, Caroline |
| | Estland (2) |
|---|
| Kanepi, Kaia | | Kontaveit, Anett |
| | Frankrig (7) |
|---|
| Garcia, Caroline | | Gasquet, Richard | | Mannarino, Adrian | | Mladenovic, Kristina | | Monfils, Gael | | Paire, Benoit | | Pouille, Lucas |
| | Georgien (1) |
|---|
| Basilashvili, Nikoloz |
|
| Tyskland (5) |
|---|
| Gojowczyk, Peter | | Kerber, Angelique | | Kohlschreiber, Philipp | | Siegemund, Laura | | Zverev, Alexander |
| | Grækenland (2) |
|---|
| Sakkari, Maria | | Tsitsipas, Stefano |
| | | Italien (10) |
|---|
| Baldi, Filippo | | Berrettini, Matteo | | Cecchinato, Marco | | Errani, Sara | | Fognini, Fabio | | Rosatello, Camilla | | Schiavone, Francesca | | Seppi, Andreas | | Sonego, Lorenzo | | Vinci, Roberta |
|
| Japan (3) |
|---|
| Nishikori, Kei | | Osaka, Naomi | | Sugita, Yuichi |
| | Kasakhstan (1) |
|---|
| Diyas, Zarina |
| | Letland (2) |
|---|
| Ostapenko, Jelena | | Sevastova, Anastasija |
| | Luxembourg (1) |
|---|
| Muller, Gilles |
|
| Holland (2) |
|---|
| Bertens, Kiki | | Haase, Robin |
| | Rumænien (4) |
|---|
| Begu, Irina-Camelia | | Buzarnescu, Mihaela | | Cirstea, Sorana | | Halep, Simona |
| | Rusland (8) |
|---|
| Kasatkina, Daria | | Khachanov, Karen | | Kuznetsova, Svetlana | | Medvedev, Daniil | | Pavlyuchenkova, Anastasia | | Sharapova, Maria | | Vesnina, Elena | | Vikhlyantseva, Natalia |
| | Serbien (2) |
|---|
| Djokovic, Novak | | Krunic, Aleksandra |
|
| Slovakiet (2) |
|---|
| Cibulkova, Dominika | | Rybarikova, Magdalena |
| | Slovenien (2) |
|---|
| Bedene, Aljaz | | Hercog, Polona |
| | Sydafrika (1) |
|---|
| Anderson, Kevin |
| | Spanien (8) |
|---|
| Carreno Busta, Pablo | | Ferrer, David | | Lopez, Feliciano | | Muguruza, Garbiñe | | Nadal, Rafael | | Ramos-Vinolas, Albert | | Suárez Navarro, Carla | | Verdasco, Fernando |
|
| Schweizisk (1) |
|---|
| Wawrinka, Stan |
| | | Tunesien (1) |
|---|
| Jaziri, Malek |
| | Ukraine (3) |
|---|
| Dolgopolov, Alexandr | | Svitolina, Elina | | Tsurenko, Lesia |
|
| Storbritannien (2) |
|---|
| Edmund, Kyle | | Konta, Johanna |
| | USA (12) |
|---|
| Collins, Danielle | | Donaldson, Jared | | Harrison, Ryan | | Isner, John | | Johnson, Steve | | Keys, Madison | | Querrey, Sam | | Sock, Jack | | Stephens, Sloane | | Tiafoe, Frances | | Vandeweghe, Coco | | Williams, Venus |
| |