Stadium: Court 6 Round: 26 Ground: Hardcourt outdoor
| ITF W15 Sozopol | 2021/10/05 09:00 | Jade Bornay v Lia Karatancheva | 6-3,5-7,6-7 |
| ITF W15 Sozopol | 2021/09/14 13:25 | Dia Evtimova v Lia Karatancheva | 6-7,7-5,6-4 |
| ITF W15 Varna | 2021/09/08 10:05 | Lia Karatancheva v Vanessa Ersoz | 4-6,6-7 |
| ITF W60 Prague | 2021/08/29 09:30 | Ioana Loredana Rosca v Lia Karatancheva | 6-2,6-4 |
| ITF W25 Vrnjacka Banja | 2021/08/17 07:30 | Funa Kozaki v Lia Karatancheva | 6-2,6-3 |
| ITF W25 Vrnjacka Banja | 2021/08/16 11:00 | Verginie Tchakarova v Lia Karatancheva | 1-6,3-6 |
| ITF W25 Vrnjacka Banja | 2021/08/15 13:00 | Fatma Idrizovic v Lia Karatancheva | 1-6,6-4,8-10 |
| ITF W25 Evansville | 2021/07/14 16:35 | Lia Karatancheva v Emiliana Arango | 1-6,3-6 |
| ITF W15 Sozopol | 2021/10/06 08:30 | Lucia L Domingo v Julia Terziyska | 3-6,3-6 |
| ITF W15 Sozopol | 2021/09/16 07:00 | Polina Pavlova v Julia Terziyska | 2-6,4-6 |
| ITF W15 Sozopol | 2021/09/15 09:30 | Mihaela Tsoneva v Julia Terziyska | 1-6,4-6 |
| ITF W15 Varna | 2021/09/12 06:55 | Julia Terziyska v Daria Mishina | 4-6,4-6 |
| ITF W15 Varna | 2021/09/11 07:00 | Jana Bojovic v Julia Terziyska | 3-6,7-5,4-6 |
| ITF W15 Varna | 2021/09/10 06:55 | Julia Terziyska v Romana Cisovska | 6-4,6-0 |
| ITF W15 Varna | 2021/09/09 06:30 | Julia Terziyska v Vanessa Ersoz | 6-2,6-1 |
| ITF W15 Varna | 2021/09/07 09:05 | Julia Terziyska v Eleonora Alvisi | 6-4,6-3 |