| ITF W60 Bellinzona | 2021/04/05 13:20 | Bianca Turati v Elitsa Kostova | 6-4,6-4 |
| ITF W25 Dubai | 2021/04/01 06:25 | Elitsa Kostova v Yuliya Hatouka | 2-6,5-7 |
| ITF W25 Dubai | 2021/03/31 07:40 | Lesley Pattinama Kerkhove v Elitsa Kostova | 2-6,5-7 |
| ITF W25 Dubai | 2021/03/30 10:50 | Elitsa Kostova v Sabina Sharipova | 6-4,4-6,6-1 |
| Australian Open Women | 2021/01/10 12:55 | Antonia Lottner v Elitsa Kostova | 6-4,7-5 |
| ITF W25 LPD Gran Canaria | 2020/11/18 13:00 | Elitsa Kostova v Jule Niemeier | 3-6,0-6 |
| French Open Women | 2020/09/24 08:00 | Elitsa Kostova v Monica Niculescu | 0-6,7-6,3-6 |
| French Open Women | 2020/09/22 13:10 | Elitsa Kostova v Gabriela Ce | 7-5,3-6,6-2 |
| ITF W25 Cordoba | 2021/04/07 13:30 | Yuliana Lizarazo v Ani Vangelova | 6-2,7-5 |
| ITF W25 Cordoba | 2021/04/06 13:25 | Valentina Urraco v Ani Vangelova | 1-6,0-6 |
| ITF W25 Cordoba | 2021/04/05 16:30 | Daiana Postay v Ani Vangelova | 0-6,0-6 |
| ITF W25 Cordoba | 2021/04/04 14:30 | Maria Victoria Marchesini v Ani Vangelova | 1-6,0-6 |
| ITF W25 Villa Maria | 2021/03/30 12:30 | Maria G Carrasco v Ani Vangelova | 6-4,6-3 |
| ITF W25 Villa Maria | 2021/03/29 15:00 | Zoe Hitt v Ani Vangelova | 0-6,0-6 |
| ITF W25 Buenos Aires | 2021/03/21 12:00 | Panna Udvardy v Ani Vangelova | 6-0,6-0 |
| ITF W15 Antalya | 2021/03/09 07:00 | Maria Juliana Parra Romero v Ani Vangelova | 7-6,6-2 |