Stadium: Court 5 Round: 26 Ground: Clay
| ITF W15 Alkmaar | 2020/08/26 09:00 | Ani Vangelova v Ruppert, Lena | 1-6,6-7 |
| ITF W15 Vejle | 2021/07/28 08:00 | Ingrid Vojcinakova v Ruppert, Lena | 1-6,6-1,4-6 |
| ITF W15 Vejle | 2021/07/26 10:00 | Ruppert, Lena v Dimitra Tsatsa | 6-3,6-1 |
| ITF W25 Kyiv | 2021/07/21 10:35 | Ruppert, Lena v Anastasiya Konstantinovna Soboleva | 6-3,3-6,2-6 |
| ITF W25 Kyiv | 2021/07/20 08:00 | Ruppert, Lena v Bergen, Mariia | 7-6,6-2 |
| ITF - W15 Antalya | 2021/04/20 07:00 | Ekaterina Shalimova v Ruppert, Lena | 6-3,1-6,10-5 |
| ITF - W15 Antalya | 2021/04/19 07:00 | Aksu, Semra v Ruppert, Lena | 1-6,2-6 |
| ITF - W15 Antalya | 2021/04/18 07:00 | Noka Juric v Ruppert, Lena | 2-6,2-6 |
| ITF - W15 Antalya | 2021/04/12 09:00 | Ruppert, Lena v Polina Bakhmutkina | 6-4,5-7,5-10 |
| ITF W15 Vejle | 2021/07/28 13:30 | Olivia Gram v Ani Vangelova | 4-6,6-7 |
| ITF W15 Don Benito | 2021/07/21 07:00 | Rudiukova, Nina v Ani Vangelova | 3-6,6-4,7-5 |
| ITF W15 Don Benito | 2021/07/20 10:40 | Karolina Novakova v Ani Vangelova | 4-6,4-6 |
| ITF - W15 Antalya | 2021/06/29 11:25 | Ani Vangelova v Kostenko, L. | 3-6,3-6 |
| ITF - W15 Antalya | 2021/06/24 08:35 | Ani Vangelova v Sapfo Sakellaridi | 4-6,6-7 |
| ITF - W15 Antalya | 2021/06/23 06:45 | Anja Wildgruber v Ani Vangelova | 2-6,6-7 |
| ITF - W15 Antalya | 2021/06/22 07:00 | Ani Vangelova v Jimar G G Gonzalez | 6-1,6-3 |
| ITF - W15 Antalya | 2021/06/21 10:55 | Ani Vangelova v Takayama, Chihiro | 6-2,6-2 |