Stadion: Court 2 Village Round: 54 Ground: Clay
| ITF Damen - W25 - Koksijde | 2021/08/08 10:35 | Ekaterina Kazionova v Irene Zorg | 6-1,6-1 |
| ITF Damen - W25 - Parnu | 2021/08/04 13:30 | Ekaterina Kazionova v Oleksandra Oliynykova | 2-6,6-7 |
| ITF Damen - W60 - Versmold | 2021/07/25 07:55 | Gina Marie Dittmann v Ekaterina Kazionova | 6-3,3-6,10-3 |
| ITF Damen - W15 - Moskau | 2021/07/22 08:20 | Ekaterina Kazionova v Nigina Abduraimova | 1-6,6-4,3-6 |
| ITF Damen - W15 - Moskau | 2021/07/21 09:55 | Ekaterina Kazionova v Ekaterina Khayrutdinova | 7-6,7-5 |
| ITF Damen - W15 - Moskau | 2021/07/20 07:00 | Ekaterina Kazionova v Victoria Mikhaylova | 6-4,6-0 |
| ITF Damen - W15 - Moskau | 2021/07/19 08:00 | Ekaterina Kazionova v Nikol Mishieva | 6-2,6-0 |
| ITF Damen - W60 - Nur-Sultan | 2021/07/13 07:00 | Ekaterina Kazionova v Gozal Ainitdinova | 2-6,4-6 |
| ITF Damen - W25 - Koksijde | 2021/08/08 08:00 | Anna Klasen v Lexie Stevens | 6-3,6-3 |
| ITF Damen - W60 - Versmold | 2021/07/29 12:15 | Federica Di Sarra v Anna Klasen | 6-4,6-4 |
| ITF Damen - W60 - Versmold | 2021/07/27 13:00 | Anna Klasen v Daniela Seguel | 6-3,6-7,6-4 |
| ITF Damen - W60 - Versmold | 2021/07/26 15:00 | Anna Klasen v Yana Morderger | 6-7,6-2,10-6 |
| ITF Damen - W60 - Olomouc | 2021/07/18 08:00 | Amanda Carreras v Anna Klasen | 6-2,6-1 |
| ITF - W100 - Contrexeville | 2021/07/05 11:00 | Anna Klasen v Margaux Rouvroy | 4-6,3-6 |
| UTR Pro Tennis Series - Kopenhagen - Damen | 2021/05/29 12:10 | Sofia Nami Samavati v Anna Klasen | 6-4,6-0 |
| UTR Pro Tennis Series - Kopenhagen - Damen | 2021/05/28 11:30 | Lou Adler v Anna Klasen | 4-6,2-6 |