| | | | |
|  United States |  Latvia | |
|
|
RANK 7 | Sofia Kenin | 6-2 6-2 | Anastasija Sevastova | RANK 41 |
RANK 9 | Serena Williams | 7-6(4) 7-6(3) | Jelena Ostapenko | RANK 40 |
RANK 7 | Sofia Kenin | 3-6 6-2 2-6 | Jelena Ostapenko | RANK 40 |
RANK 9 | Serena Williams | 6-7(5) 6-3 6-7(4) | Anastasija Sevastova | RANK 41 |
| Sofia Kenin / Bethanie Mattek-Sands | 6-4 6-0 | Jelena Ostapenko / Anastasija Sevastova | |
| | | | |
| | | | |
|  Netherlands |  Belarus | |
|
|
RANK 8 | Kiki Bertens | 6-7(5) 6-2 6-1 | Aliaksandra Sasnovich | RANK 113 |
RANK 77 | Arantxa Rus | 2-6 3-6 | Aryna Sabalenka | RANK 13 |
RANK 8 | Kiki Bertens | 6-4 6-4 | Aryna Sabalenka | RANK 13 |
RANK 77 | Arantxa Rus | 6-0 5-7 2-6 | Aliaksandra Sasnovich | RANK 113 |
| Kiki Bertens / Demi Schuurs | 6-4 3-6 6-7(8) | Aryna Sabalenka / Aliaksandra Sasnovich | |
| | | | |
| | | | |
|  Romania |  Russia | |
|
|
RANK 166 | Elena Gabriela Ruse | 1-6 4-6 | Ekaterina Alexandrova | RANK 28 |
RANK 90 | Ana Bogdan | 6-3 6-7(5) 6-1 | Veronika Kudermetova | RANK 38 |
RANK 90 | Ana Bogdan | 5-7 6-3 5-7 | Ekaterina Alexandrova | RANK 28 |
RANK 197 | Jaqueline Adina Cristian | 7-5 6-3 | Veronika Kudermetova | RANK 38 |
| Jaqueline Adina Cristian / Elena Gabriela Ruse | 3-6 2-6 | Anna Blinkova / Anna Kalinskaya | |
| | | | |
| | | | |
|  Brazil |  Germany | |
|
|
RANK 359 | Teliana Pereira | 3-6 3-6 | Laura Siegemund | RANK 73 |
RANK 225 | Gabriela Ce | 3-6 6-7(5) | Tatjana Maria | RANK 91 |
RANK 225 | Gabriela Ce | 1-6 2-6 | Laura Siegemund | RANK 73 |
RANK 359 | Teliana Pereira | NOT PLAYED | Tatjana Maria | RANK 91 |
| Laura Pigossi / Luisa Stefani | 1-6 4-6 | Anna-Lena Friedsam / Antonia Lottner | |
| | | | |
| | | | |
|  Spain |  Japan | |
|
|
RANK 78 | Sara Sorribes Tormo | 6-0 6-3 | Naomi Osaka | RANK 10 |
RANK 55 | Carla Suarez Navarro | 6-3 6-4 | Misaki Doi | RANK 86 |
RANK 55 | Carla Suarez Navarro | 6-1 6-3 | Kurumi Nara | RANK 137 |
RANK 78 | Sara Sorribes Tormo | NOT PLAYED | Misaki Doi | RANK 86 |
| Lara Arruabarrena / Aliona Bolsova | 2-6 3-6 | Shuko Aoyama / Ena Shibahara | |
| | | | |
| | | | |
|  Switzerland |  Canada | |
|
|
RANK 68 | Jil Teichmann | 7-6(4) 6-4 | Leylah Fernandez | RANK 185 |
RANK 5 | Belinda Bencic | 6-1 6-2 | Gabriela Dabrowski | RANK 448 |
RANK 5 | Belinda Bencic | 2-6 6-7(3) | Leylah Fernandez | RANK 185 |
RANK 68 | Jil Teichmann | 6-3 6-4 | Gabriela Dabrowski | RANK 448 |
| Viktorija Golubic / Stefanie Vogele | NOT PLAYED | Bianca Andreescu / Gabriela Dabrowski | |
| | | | |
| | | | |
|  Belgium |  Kazakhstan | |
|
|
RANK 19 | Elise Mertens | 1-6 6-2 6-1 | Zarina Diyas | RANK 63 |
RANK 115 | Ysaline Bonaventure | 6-3 6-7(2) 2-6 | Yulia Putintseva | RANK 34 |
RANK 19 | Elise Mertens | 6-1 7-6(1) | Yulia Putintseva | RANK 34 |
RANK 81 | Kirsten Flipkens | 6-3 6-4 | Zarina Diyas | RANK 63 |
| Kirsten Flipkens / Greet Minnen | NOT PLAYED | Anna Danilina / Yaroslava Shvedova | |
| | | | |
| | | | |
|  Slovakia |  Great Britain | |
|
|
RANK 199 | Anna Karolina Schmiedlova | 6-2 6-3 | Heather Watson | RANK 74 |
RANK 65 | Viktoria Kuzmova | 6-7(3) 6-3 7-5 | Harriet Dart | RANK 141 |
RANK 202 | Rebecca Sramkova | 0-6 5-7 | Heather Watson | RANK 74 |
RANK 199 | Anna Karolina Schmiedlova | 7-5 6-3 | Harriet Dart | RANK 141 |
| Viktoria Kuzmova / Magdalena Rybarikova | NOT PLAYED | Naiktha Bains / Emma Raducanu | |
| | | | |