 Qatar: Doha - Doubles - Main |
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| Semi-finals | Krejcikova B./Siniakova K. | Niculescu M./Ostapenko J. | 1:2 (6:2, 3:6, 8:10) | details | 04.03.2021 |
| Quarter-finals | Krejcikova B./Siniakova K. | Bertens K./Pattinama Kerkhove L. | 2:1 (4:6, 6:4, 13:11) | details | 03.03.2021 |
| 1/8-finals | Krejcikova B./Siniakova K. | Zheng S./Zhu L. | 2:1 (5:7, 6:3, 10:3) | details | 01.03.2021 |
 Australia: Australian Open - Doubles - Main |
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| Final | Krejcikova B./Siniakova K. | Mertens E./Sabalenka A. | 0:2 (2:6, 3:6) | details | 19.02.2021 |
| Semi-finals | Jurak D./Stojanovic N. | Krejcikova B./Siniakova K. | 1:2 (6:3, 2:6, 4:6) | details | 17.02.2021 |
| Quarter-finals | Krejcikova B./Siniakova K. | Fichman S./Olmos G. | 2:1 (7:5, 5:7, 6:2) | details | 16.02.2021 |
| 1/8-finals | Krejcikova B./Siniakova K. | Pera B./Van der Hoek R. | 2:0 (6:4, 6:4) | details | 15.02.2021 |
| 1/16-finals | Krejcikova B./Siniakova K. | Jabeur O./McHale C. | 2:0 (6:3, 6:4) | details | 12.02.2021 |
| Australia: Melbourne (Gippsland Trophy) - Doubles - Main |
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| Final | Krejcikova B./Siniakova K. | Chan H-C./Chan L. | 2:0 (6:3, 7:64) | details | 07.02.2021 |
| Semi-finals | Krejcikova B./Siniakova K. | Buzarnescu M./Cornet A. | 2:0 (7:5, 6:2) | details | 06.02.2021 |
| Quarter-finals | Krejcikova B./Siniakova K. | Siegemund L./Zvonareva V. | 2:1 (3:6, 6:1, 10:6) | details | 05.02.2021 |
| 1/8-finals | Krejcikova B./Siniakova K. | Aiava D./Sharma A. | 2:1 (6:4, 2:6, 10:8) | details | 02.02.2021 |
 Austria: Linz - Doubles - Main |
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| Final | Hradecka L./Siniakova K. | Rus A./Zidansek T. | 0:2 (3:6, 4:6) | details | 15.11.2020 |
| Semi-finals | Hradecka L./Siniakova K. | Bara Irina M./Sorribes Tormo S. | 2:1 (6:3, 3:6, 10:5) | details | 13.11.2020 |
| Quarter-finals | Hradecka L./Siniakova K. | Begu I./Podoroska N. | 2:0 (6:1, 7:5) | details | 12.11.2020 |
| 1/8-finals | Hradecka L./Siniakova K. | Dzalamidze N./Silva E. | 2:0 (6:1, 6:3) | details | 10.11.2020 |
 Czech Republic: Ostrava - Doubles - Main |
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| Semi-finals | Dabrowski G./Stefani L. | Krejcikova B./Siniakova K. | WO. | details | 24.10.2020 |
| Quarter-finals | Linette M./Teichmann J. B. | Krejcikova B./Siniakova K. | 1:2 (4:6, 6:2, 5:10) | details | 22.10.2020 |
| 1/8-finals | Lister C. E./Voracova R. | Krejcikova B./Siniakova K. | 0:2 (4:6, 0:6) | details | 21.10.2020 |
 France: French Open - Doubles - Main |
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| Semi-finals | Krejcikova B./Siniakova K. | Babos T./Mladenovic K. | 1:2 (2:6, 6:4, 5:7) | details | 09.10.2020 |
| Quarter-finals | Kenin S./Mattek-Sands B. | Krejcikova B./Siniakova K. | 1:2 (6:1, 4:6, 2:6) | details | 06.10.2020 |
| 1/8-finals | Kuzmova V./Pliskova Kr. | Krejcikova B./Siniakova K. | 0:2 (4:6, 2:6) | details | 05.10.2020 |
| 1/16-finals | Brady J./Dolehide C. | Krejcikova B./Siniakova K. | 1:2 (6:2, 3:6, 4:6) | details | 03.10.2020 |
| 1/32-finals | Burel C./Ponchet J. | Krejcikova B./Siniakova K. | 0:2 (0:6, 3:6) | details | 01.10.2020 |
 Italy: Rome - Doubles - Main |
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| Quarter-finals | Hsieh S-W./Strycova B. | Kudermetova V./Siniakova K. | 2:0 (7:65, 6:4) | details | 18.09.2020 |
| 1/8-finals | Gatto-Monticone G./Paolini J. | Kudermetova V./Siniakova K. | 0:2 (1:6, 0:6) | details | 17.09.2020 |
| 1/16-finals | Christian K./Olmos G. | Kudermetova V./Siniakova K. | 0:2 (2:6, 3:6) | details | 15.09.2020 |
 USA: US Open - Doubles - Main |
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| 1/8-finals | Friedsam A-L./Siniakova K. | Blinkova A./Kudermetova V. | 1:2 (3:6, 6:3, 1:6) | details | 04.09.2020 |
| 1/16-finals | Friedsam A-L./Siniakova K. | Arconada U. M./McHale C. | 2:0 (6:4, 6:3) | details | 03.09.2020 |
United Arab Emirates: Dubai - Doubles - Main