| UTR Pro Tennis Series Pazardzhik Women | 2021/05/08 09:00 | Elitsa Kostova v Daria Shalamanova | 6-4,3-6,6-1 |
| UTR Pro Tennis Series Pazardzhik Women | 2021/05/07 10:00 | Doroteja Petrovic v Elitsa Kostova | 1-6,0-6 |
| UTR Pro Tennis Series Pazardzhik Women | 2021/05/06 10:00 | Mirela Shkumbova v Elitsa Kostova | 1-6,0-6 |
| UTR Pro Tennis Series Pazardzhik Women | 2021/05/04 11:30 | Ralitsa Alexandrova v Elitsa Kostova | 2-6,0-6 |
| UTR Pro Tennis Series Pazardzhik Women | 2021/05/03 08:30 | Elitsa Kostova v Ani Vangelova | 6-1,5-0 |
| 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 |
| UTR Pro Tennis Series Pazardzhik Women | 2021/05/08 07:30 | Julia Terziyska v Simona Ogescu | 3-6,4-6 |
| UTR Pro Tennis Series Pazardzhik Women | 2021/05/07 11:30 | Simona Ogescu v Stefana Lazar | 6-1,6-0 |
| UTR Pro Tennis Series Pazardzhik Women | 2021/05/05 09:00 | Simona Ogescu v Rositsa Dencheva | 6-4,4-6,6-2 |
| UTR Pro Tennis Series Pazardzhik Women | 2021/05/04 08:30 | Simona Ogescu v Darja Semenistaja | 6-2,2-6,5-4 |
| UTR Pro Tennis Series Pazardzhik Women | 2021/05/03 13:00 | Isabelle Kouzmanov v Simona Ogescu | 0-6,0-1 |
| UTR Pro Tennis Series Bucharest Women | 2021/05/02 07:00 | Simona Ogescu v Darja Semenistaja | 6-3,3-6,2-6 |
| UTR Pro Tennis Series Bucharest Women | 2021/05/01 07:30 | Patricia Maria Tig v Simona Ogescu | 6-4,1-1 |
| UTR Pro Tennis Series Bucharest Women | 2021/04/29 11:30 | Simona Ogescu v Ivania Martinich | 4-6,6-4,6-3 |