| UTR Pro Tennis Series Bucharest Women | 2021/04/24 12:00 | Stefana Lazar v Ralitsa Alexandrova | 6-2,5-1 |
| ITF W15 Antalya | 2020/12/06 07:00 | Stefana Lazar v Ralitsa Alexandrova | 0-6,6-3,9-11 |
| UTR Pro Tennis Series Beograd Women | 2021/07/12 09:00 | Nikol Palecek v Stefana Lazar | 6-2,6-3 |
| ITF W15 Heraklion | 2021/05/24 08:00 | Silvia Martinez Jimenez v Stefana Lazar | 6-2,6-1 |
| ITF W15 Heraklion | 2021/05/17 08:00 | Fabienne Gettwart v Stefana Lazar | 6-3,6-1 |
| UTR Pro Tennis Series Pazardzhik Women | 2021/05/08 11:00 | Stefana Lazar v Iva Ivanova | 4-6,6-4,3-6 |
| 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 | 2021/05/06 07:00 | Darja Semenistaja v Stefana Lazar | 6-4,6-3 |
| UTR Pro Tennis Series Pazardzhik Women | 2021/05/04 08:30 | Nikol Ruseva v Stefana Lazar | 2-6,2-5 |
| UTR Pro Tennis Series Pazardzhik Women | 2021/05/03 12:00 | Stefana Lazar v Rositsa Dencheva | 4-6,0-6 |
| ITF W15 Prokuplje | 2021/07/04 11:00 | Noka Juric v Ralitsa Alexandrova | 6-2,6-4 |
| ITF W15 Prokuplje | 2021/06/27 12:15 | Tamara Malesevic v Ralitsa Alexandrova | 6-3,6-3 |
| UTR Pro Tennis Series Pazardzhik Women | 2021/05/15 09:00 | Katerina Dimitrova v Ralitsa Alexandrova | 6-0,2-6,6-1 |
| UTR Pro Tennis Series Pazardzhik Women | 2021/05/13 10:30 | Julia Terziyska v Ralitsa Alexandrova | 7-5,5-2 |
| UTR Pro Tennis Series Pazardzhik Women | 2021/05/10 07:00 | Ralitsa Alexandrova v Elizara Yaneva | 7-5,5-4 |
| UTR Pro Tennis Series Pazardzhik Women | 2021/05/08 12:30 | Darja Semenistaja v Ralitsa Alexandrova | 7-5,6-7,6-1 |
| UTR Pro Tennis Series Pazardzhik Women | 2021/05/06 10:00 | Ralitsa Alexandrova v Ani Vangelova | 6-1,6-4 |
| UTR Pro Tennis Series Pazardzhik Women | 2021/05/05 12:00 | Ralitsa Alexandrova v Mirela Shkumbova | 2-6,6-4,2-6 |