| UTR Pro Tennis Series Plovdiv Women | 2021/12/14 09:00 | Mariya Vyshkina v Morgina, Anna | 3-6,4-6 |
| UTR Pro Tennis Series Plovdiv Women | 2021/12/13 12:00 | Mariya Vyshkina v Shkumbova, Mirela | 1-6,3-6 |
| UTR Pro Tennis Series Zadar Women | 2021/11/29 11:00 | Jovana Grujic v Mariya Vyshkina | 6-2,6-4 |
| UTR Pro Tennis Series Zadar Women | 2021/11/25 09:30 | Mariya Vyshkina v Bojana Jovanovic | 6-7,6-1,6-1 |
| UTR Pro Tennis Series Zadar Women | 2021/11/24 12:00 | Mariya Vyshkina v Zlochova, Zuzana | 1-6,1-5 |
| UTR Pro Tennis Series Zadar Women | 2021/11/23 14:34 | Mariya Vyshkina v Lucia Krivosudska | 7-5,6-1 |
| UTR Pro Tennis Series Zadar Women | 2021/11/22 10:00 | Mariya Vyshkina v Victoria Borodulina | 1-6,1-3 |
| UTR Pro Tennis Series Zadar Women | 2021/11/21 11:30 | Mariya Vyshkina v Sara Mikaca | 4-6,5-6 |
| UTR Pro Tennis Series Plovdiv Women | 2021/12/14 12:00 | Shkumbova, Mirela v Kostova, Elitsa | 2-6,1-5 |
| UTR Pro Tennis Series Barcelona Women | 2021/11/07 12:20 | Kostova, Elitsa v Zlochova, Zuzana | 3-6,5-7 |
| UTR Pro Tennis Series Barcelona Women | 2021/11/06 09:30 | Kostova, Elitsa v Lantigua de La Nuez, Ana | 6-0,6-1 |
| UTR Pro Tennis Series Barcelona Women | 2021/11/05 15:15 | Kostova, Elitsa v Valeria Avdeeva | 6-1,6-2 |
| UTR Pro Tennis Series Barcelona Women | 2021/11/04 11:30 | Kostova, Elitsa v Nina Ugrelidze | 4-6,6-1,6-0 |
| UTR Pro Tennis Series Barcelona Women | 2021/11/03 10:00 | Agustina Chlpac v Kostova, Elitsa | 3-6,0-6 |
| UTR Pro Tennis Series Barcelona Women | 2021/11/02 12:30 | Lucia Aranda Arcas v Kostova, Elitsa | 6-4,4-6,1-5 |
| WTA Belgrade | 2021/07/27 14:50 | Kostova, Elitsa v Arantxa Rus | 1-6,0-6 |