Stadium: Sibur Arena Round: 26 Ground: Hardcourt outdoor
| WTA Linz WD | 2021/11/10 18:00 | 왕 아 / 정 이 v Alexandrova/Sizikova | 6-3,6-3 |
| WTA Linz WD | 2021/11/09 15:20 | Alexandrova/Sizikova v Rosolska/Routliffe | 4-6,6-1,12-10 |
| WTA Moscow WD | 2021/10/21 13:30 | Alexandrova/Sizikova v Dzalamidze N / Rakhimova K | 1-6,6-4,7-10 |
| WTA Moscow WD | 2021/10/20 16:55 | Guarachi A / Krawczyk D v Alexandrova/Sizikova | 3-6,1-6 |
| French Open Women WD | 2021/06/03 14:30 | Sanders/Tomljanovic v Alexandrova/Sizikova | 6-1,6-1 |
| WTA Strasbourg WD | 2021/05/24 12:15 | Alexandrova/Sizikova v 니노미야 M / 양 Z | 4-6,4-6 |
| WTA St. Petersburg WD | 2021/03/16 16:55 | Rodionova/Van Der Hoek v Alexandrova/Sizikova | 6-2,6-2 |
| WTA Lyon WD | 2021/03/03 14:25 | Alexandrova/Sizikova v 다닐리나 안 / 마로자바 리 | 1-6,4-6 |