Stadium: Court 14 Round: 25 Ground: Hardcourt outdoor
| ITF W25 Kazan | 2021/03/11 13:50 | Ekaterina Kazionova v Ekaterina Yashina | 3-6,6-0,4-6 |
| ITF W25 Madrid | 2021/06/15 07:00 | Ekaterina Yashina v Moreno Arias, Lidia | 6-3,6-2 |
| ITF W25 Madrid | 2021/06/14 09:30 | Ekaterina Yashina v Lucia L Domingo | 6-1,7-5 |
| ITF W15 Vilnius | 2021/06/08 13:25 | Kathleen Kanev v Ekaterina Yashina | 6-7,6-1,6-4 |
| ITF W25 Kazan | 2021/06/03 10:00 | Kalita, Anhelina v Ekaterina Yashina | 7-6,7-6 |
| ITF W25 Kazan | 2021/06/01 07:00 | Ekaterina Yashina v Mishina, Daria | 4-6,6-4,6-4 |
| ITF W15 Tbilisi | 2021/05/21 07:50 | Ekaterina Yashina v Olyanovskaya, Valeriya | 6-0,4-6,4-6 |
| ITF W15 Tbilisi | 2021/05/20 08:10 | Ekaterina Yashina v Bereznyak, Shelly | 6-0,6-3 |
| ITF W15 Tbilisi | 2021/05/19 08:05 | Ekaterina Yashina v Bursa, Anastasia | 6-0,6-2 |
| ITF W25 Madrid | 2021/06/09 09:50 | Ekaterina Kazionova v Karman Kaur Thandi | 1-6,4-6 |
| ITF W25 Kazan | 2021/06/02 07:00 | Ekaterina Kazionova v Talbi, Shalimar | 3-6,4-6 |
| ITF W15 Bratislava | 2021/03/17 11:15 | Ekaterina Kazionova v Anika Jaskova | 4-6,6-2,6-3 |
| ITF W25 Kazan | 2021/03/11 13:50 | Ekaterina Kazionova v Ekaterina Yashina | 3-6,6-0,4-6 |
| ITF W25 Kazan | 2021/03/10 08:30 | Anastasia Zakharova v Ekaterina Kazionova | 4-6,2-6 |
| Moscou, Simples W-ITF-RUS-02A | 2021/02/23 10:40 | Ekaterina Kazionova v Ekaterina Maklakova | 6-3,6-7,9-11 |
| Moscou, Simples W-ITF-RUS-02A | 2021/02/22 09:40 | Ekaterina Kazionova v Ukolova, Anna | 4-6,6-4,15-13 |
| ITF W25 Altenkirchen | 2021/02/14 14:30 | Ekaterina Kazionova v Yuriko Lily Miyazaki | 3-6,2-6 |