Kazakhstan: Nur-Sultan - Doubles - Main |
| Semi-finals | Diatchenko V./Sizikova Y. | Friedsam A-L./Niculescu M. | 1:2 (4:6, 6:3, 8:10) | details | 01.10.2021 |
| Quarter-finals | Diatchenko V./Sizikova Y. | Lapko V./Marozava L. | 2:1 (5:7, 6:4, 10:7) | details | 30.09.2021 |
| 1/8-finals | Minnen G./Van Uytvanck A. | Diatchenko V./Sizikova Y. | 0:1 RET. (2:6, 1:0) | details | 29.09.2021 |
Luxembourg: Luxembourg - Doubles - Main |
| Semi-finals | Diatchenko V./Sizikova Y. | Routliffe E./Zimmermann K. | 0:2 (4:6, 2:6) | details | 17.09.2021 |
| Quarter-finals | Bouzkova M./Hradecka L. | Diatchenko V./Sizikova Y. | 0:2 (5:7, 65:7) | details | 16.09.2021 |
| 1/8-finals | Diatchenko V./Sizikova Y. | Kalashnikova O./Panova A. | 2:1 (6:3, 4:6, 10:8) | details | 14.09.2021 |