Stadium: Court 7 Round: 26 Ground: Hardcourt indoor
| ITF W25 Figueira Da Foz | 2020/09/06 12:00 | Ekaterina Kazionova v Justina Mikulskyte | 3-6,3-6 |
| ITF W25 Karaganda | 2021/10/24 07:45 | Ekaterina Kazionova v Yuliya Hatouka | 5-7,0-6 |
| ITF W25 Karaganda | 2021/10/23 05:00 | Valentina Ryser v Ekaterina Kazionova | 3-6,1-6 |
| ITF W25 Karaganda | 2021/10/22 04:55 | Ekaterina Kazionova v Ekaterina Maklakova | 6-2,2-6,6-4 |
| ITF W25 Karaganda | 2021/10/21 06:30 | Ekaterina Kazionova v Vladlena Bokova | 6-4,3-6,6-2 |
| ITF W25 Karaganda | 2021/10/20 05:00 | Suzan Lamens v Ekaterina Kazionova | 4-6,0-6 |
| WTA Nur-Sultan | 2021/09/25 05:15 | Ekaterina Kazionova v Anastasia Zakharova | 3-6,2-6 |
| ITF W80 Wiesbaden | 2021/09/20 12:00 | Ekaterina Kazionova v Ipek Oz | 2-6,6-3,3-10 |
| ITF W25 Wien | 2021/08/31 11:30 | Ekaterina Kazionova v Jessica Pieri | 6-3,4-6,3-6 |
| ITF W25 Karaganda | 2021/10/27 10:05 | Polina Bakhmutkina v Justina Mikulskyte | 0-6,4-6 |
| ITF W25 Karaganda | 2021/10/20 08:20 | Anna Ukolova v Justina Mikulskyte | 7-5,7-6 |
| ITF W25 Saint Palais Sur Mer | 2021/09/09 10:00 | Justina Mikulskyte v Selena Janicijevic | 7-6,6-4 |
| ITF W25 Saint Palais Sur Mer | 2021/09/08 11:20 | Justina Mikulskyte v Chloe Noel | 6-1,6-2 |
| ITF W25 Trieste | 2021/09/04 12:00 | Justina Mikulskyte v Tara Wurth | 1-6,4-6 |
| ITF W25 Trieste | 2021/09/03 11:45 | Nuria Brancaccio v Justina Mikulskyte | 3-6,2-6 |
| ITF W25 Trieste | 2021/09/02 10:40 | Justina Mikulskyte v Martina Colmegna | 2-6,6-3,6-3 |
| ITF W25 Trieste | 2021/09/01 08:00 | Dalila Spiteri v Justina Mikulskyte | 3-6,3-6 |