| Australia (4) |
|---|
| Barty, Ashleigh | | Gavrilova, Daria | | Stosur, Samantha | | Tomljanovic, Ajla |
| | Bielorussia (2) |
|---|
| Sabalenka, Aryna | | Sasnovich, Aliaksandra |
| | Belgio (2) |
|---|
| Flipkens, Kirsten | | Mertens, Elise |
| | Cina (3) |
|---|
| Wang, Qiang | | Zhang, Shuai | | Zheng, Saisai |
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| Repubblica Ceca (4) |
|---|
| Pliskova, Karolina | | Siniakova, Katerina | | Strycova, Barbora | | Vondrousova, Marketa |
| | Danimarca (1) |
|---|
| Wozniacki, Caroline |
| | Estonia (1) |
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| Kontaveit, Anett |
| | Francia (3) |
|---|
| Cornet, Alizé | | Ferro, Fiona | | Parmentier, Pauline |
|
| Germania (4) |
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| Friedsam, Anna-Lena | | Goerges, Julia | | Kerber, Angelique | | Petkovic, Andrea |
| | | | Kazakistan (2) |
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| Diyas, Zarina | | Putintseva, Yulia |
|
| Lettonia (2) |
|---|
| Ostapenko, Jelena | | Sevastova, Anastasija |
| | Lussemburgo (1) |
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| Minella, Mandy |
| | | Polonia (1) |
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| Linette, Magda |
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| Puig, Monica |
| | Romania (2) |
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| Buzarnescu, Mihaela | | Halep, Simona |
| | Russia (5) |
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| Alexandrova, Ekaterina | | Gasparyan, Margarita | | Kasatkina, Daria | | Kudermetova, Veronika | | Rodina, Evgeniya |
| | Slovenia (2) |
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| Hercog, Polona | | Zidansek, Tamara |
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| Spagna (1) |
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| Suárez Navarro, Carla |
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| Peterson, Rebecca |
| | Svizzera (2) |
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| Bencic, Belinda | | Golubic, Viktorija |
| |
| | Ucraina (3) |
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| Svitolina, Elina | | Tsurenko, Lesia | | Yastremska, Dayana |
| | Regno Unito (4) |
|---|
| Dart, Harriet | | Konta, Johanna | | Swan, Katie | | Watson, Heather |
| | Stati Uniti (4) |
|---|
| Collins, Danielle | | Kenin, Sofia | | Pegula, Jessica | | Stephens, Sloane |
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