Stadium: Court 3 Round: 44 Ground: Clay
| ITF W15 Prokuplje | 2021/06/28 07:00 | Vishnevskaya, Ekaterina v Alessia Beatrice Ciuca | 7-6,6-2 |
| ITF W15 Prokuplje | 2021/06/27 08:15 | Vishnevskaya, Ekaterina v Nina Radovanovic | 6-0,4-6,10-7 |
| ITF W15 L'Aquila | 2021/06/24 15:15 | Vishnevskaya, Ekaterina v Catini, Chiara | 6-2,5-7,6-7 |
| ITF W15 L'Aquila | 2021/06/23 07:55 | Vishnevskaya, Ekaterina v Anastasia Piangerelli | 6-2,7-5 |
| ITF - W15 Shymkent | 2021/06/01 06:45 | Natsvlishvili, Nino v Vishnevskaya, Ekaterina | 6-3,6-4 |
| ITF - W15 Shymkent | 2021/05/26 11:30 | Zhibek Kulambayeva v Vishnevskaya, Ekaterina | 6-3,3-6,6-3 |
| ITF W25 Platja D’Aro | 2021/05/16 07:30 | Suzan Lamens v Vishnevskaya, Ekaterina | 6-4,6-2 |
| ITF W15 Cairo | 2021/05/06 08:00 | Dmitrichenko, Yekaterina v Vishnevskaya, Ekaterina | 6-0,6-0 |
| ITF W15 Prokuplje | 2021/06/28 08:30 | Nikol Palecek v Ekaterina Reyngold | 0-6,2-6 |
| ITF W15 Prokuplje | 2021/06/27 11:00 | Ghaoui, Yasmeen v Ekaterina Reyngold | 0-6,3-6 |
| ITF - W15 Shymkent | 2021/06/03 05:00 | Ekaterina Reyngold v Zhibek Kulambayeva | 4-6,1-6 |
| ITF - W15 Shymkent | 2021/06/02 05:00 | Shalakhova, Stefanya v Ekaterina Reyngold | 2-6,7-6,3-6 |
| ITF - W15 Shymkent | 2021/05/25 04:00 | Olyanovskaya, Valeriya v Ekaterina Reyngold | 6-4,6-3 |
| ITF - W15 Sharm El Sheikh | 2021/03/22 09:00 | Elena-Teodora Cadar v Ekaterina Reyngold | 6-3,6-0 |
| ITF - W15 Sharm El Sheikh | 2021/03/21 15:00 | Ekaterina Reyngold v Beatrice Ricci | 7-5,7-6 |
| ITF - W15 Antalya | 2021/01/19 06:30 | Nuria Brancaccio v Ekaterina Reyngold | 6-1,6-1 |