| Australia (4) |
|---|
| Barty, Ashleigh | | Gavrilova, Daria | | Stosur, Samantha | | Tomljanovic, Ajla |
| | Belarus (3) |
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| Azarenka, Victoria | | Sabalenka, Aryna | | Sasnovich, Aliaksandra |
| | Belgium (3) |
|---|
| Flipkens, Kirsten | | Mertens, Elise | | Uytvanck, Alison Van |
| | Brazil (1) |
|---|
| Haddad Maia, Beatriz |
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| China (3) |
|---|
| Wang, Qiang | | Wang, Yafan | | Zhang, Shuai |
| | Croatia (2) |
|---|
| Martic, Petra | | Vekic, Donna |
| | Czech Republic (6) |
|---|
| Kvitova, Petra | | Pliskova, Karolina | | Pliskova, Kristyna | | Siniakova, Katerina | | Strycova, Barbora | | Vondrousova, Marketa |
| | Denmark (1) |
|---|
| Wozniacki, Caroline |
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| Estonia (2) |
|---|
| Kanepi, Kaia | | Kontaveit, Anett |
| | France (4) |
|---|
| Cornet, Alizé | | Dodin, Oceane | | Garcia, Caroline | | Mladenovic, Kristina |
| | Germany (6) |
|---|
| Barthel, Mona | | Goerges, Julia | | Kerber, Angelique | | Maria, Tatjana | | Petkovic, Andrea | | Witthoeft, Carina |
| |
| | | | Kazakhstan (2) |
|---|
| Diyas, Zarina | | Putintseva, Yulia |
|
| Latvia (2) |
|---|
| Ostapenko, Jelena | | Sevastova, Anastasija |
| | Netherlands (1) |
|---|
| Bertens, Kiki |
| | Paraguay (1) |
|---|
| Cepede Royg, Veronica |
| | Poland (2) |
|---|
| Linette, Magda | | Radwanska, Agnieszka |
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| Puerto Rico (1) |
|---|
| Puig, Monica |
| | Romania (5) |
|---|
| Begu, Irina-Camelia | | Buzarnescu, Mihaela | | Cirstea, Sorana | | Halep, Simona | | Niculescu, Monica |
| | Russia (6) |
|---|
| Kasatkina, Daria | | Kuznetsova, Svetlana | | Makarova, Ekaterina | | Pavlyuchenkova, Anastasia | | Vesnina, Elena | | Vikhlyantseva, Natalia |
| | Serbia (1) |
|---|
| Krunic, Aleksandra |
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| Slovakia (1) |
|---|
| Rybarikova, Magdalena |
| | Slovenia (1) |
|---|
| Hercog, Polona |
| | Spain (3) |
|---|
| Arruabarrena, Lara | | Muguruza, Garbiñe | | Suárez Navarro, Carla |
| | Sweden (2) |
|---|
| Larsson, Johanna | | Peterson, Rebecca |
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| Switzerland (4) |
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| Bacsinszky, Timea | | Bencic, Belinda | | Golubic, Viktorija | | Voegele, Stefanie |
| | | Ukraine (3) |
|---|
| Bondarenko, Kateryna | | Svitolina, Elina | | Tsurenko, Lesia |
| | United Kingdom (3) |
|---|
| Boulter, Katie | | Konta, Johanna | | Watson, Heather |
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| United States (19) |
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| Anisimova, Amanda | | Bellis, CiCi | | Brady, Jennifer | | Brengle, Madison | | Collins, Danielle | | Davis, Lauren | | Kenin, Sofia | | Keys, Madison | | Lepchenko, Varvara | | Liu, Claire | | Mattek-Sands, Bethanie | | McHale, Christina | | Osuigwe, Whitney | | Pera, Bernarda | | Riske, Alison | | Stephens, Sloane | | Vandeweghe, Coco | | Williams, Serena | | Williams, Venus |
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