Stadium: Court 4 Round: 27 Ground: Hardcourt indoor
| ITF - W25 Moskva | 2021/02/23 10:40 | Ekaterina Kazionova v Ekaterina Maklakova | 6-3,6-7,9-11 |
| 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 Viedeň | 2021/08/31 11:30 | Ekaterina Kazionova v Jessica Pieri | 6-3,4-6,3-6 |
| ITF - W25 Braunschweig | 2021/08/24 10:00 | Ekaterina Kazionova v Katharina Hobgarski | 5-7,3-6 |
| ITF - W25 Oldenzaal | 2021/08/19 09:00 | Ekaterina Kazionova v Vlada Koval | 6-7,3-6 |
| ITF - W25 Oldenzaal | 2021/08/18 11:20 | Ekaterina Kazionova v Emily Arbuthnott | 6-2,6-0 |
| ITF - W25 Karaganda | 2021/10/21 05:00 | Ekaterina Maklakova v Vlada Koval | 6-3,7-5 |
| ITF - W25 Karaganda | 2021/10/20 06:20 | Ekaterina Maklakova v Sofiya Chursina | 6-0,6-3 |
| ITF - W15 Kazaň | 2021/10/17 07:00 | Daria Kudashova v Ekaterina Maklakova | 6-2,5-7,6-1 |
| ITF - W15 Kazaň | 2021/10/16 08:00 | Ekaterina Maklakova v Ekaterina Ovcharenko | 6-1,6-1 |
| ITF - W15 Kazaň | 2021/10/15 07:30 | Elena Pridankina v Ekaterina Maklakova | 1-6,4-6 |
| ITF - W15 Kazaň | 2021/10/14 07:00 | Ekaterina Maklakova v Ksenia Laskutova | 7-5,6-3 |
| ITF - W15 Kazaň | 2021/10/13 10:10 | Alina Trynkina v Ekaterina Maklakova | 0-6,1-6 |
| ITF W60 San Bartolome De Tirajana | 2021/08/17 08:45 | Ashley Lahey v Ekaterina Maklakova | 6-2,7-5 |