Stadium: Court 5 Round: 25 Ground: Clay
| ITF W15 Warmbad-Villach | 2021/08/17 10:30 | Sapfo Sakellaridi v Fiona Ganz | 4-6,6-3,3-6 |
| ITF W25 Radom | 2021/08/09 09:40 | Carlota Martinez Cirez v Sapfo Sakellaridi | 6-3,7-5 |
| ITF W25 Radom | 2021/08/08 08:00 | Ingrid Vojcinakova v Sapfo Sakellaridi | 7-6,5-7,4-10 |
| ITF W25 Bydgoszcz | 2021/08/03 10:20 | Mei Yamaguchi v Sapfo Sakellaridi | 6-0,1-6,11-9 |
| ITF W25 Bydgoszcz | 2021/08/02 11:30 | Alicja Formella v Sapfo Sakellaridi | 1-6,3-6 |
| ITF W60 Grodzisk Mazowiecki | 2021/07/26 09:20 | Sapfo Sakellaridi v Valeriya Olyanovskaya | 2-6,1-6 |
| ITF W60 Grodzisk Mazowiecki | 2021/07/25 10:05 | Victoria Chramcova v Sapfo Sakellaridi | 2-6,1-6 |
| ITF W60 Olomouc | 2021/07/21 10:10 | Sapfo Sakellaridi v Diane Parry | 6-7,1-6 |
| ITF W15 Bad Waltersdorf | 2021/08/24 10:25 | Nikol Palecek v Flaminia Scara | 5-7,3-6 |
| ITF W15 Bad Waltersdorf | 2021/08/23 13:30 | Nikol Palecek v Giulia Carbonaro | 7-6,7-5 |
| ITF W15 Bad Waltersdorf | 2021/08/22 11:30 | Nikol Palecek v Sara Erenda | 6-2,6-1 |
| ITF W25 Vrnjacka Banja | 2021/08/16 11:45 | Selena Janicijevic v Nikol Palecek | 6-4,6-2 |
| ITF W25 Vrnjacka Banja | 2021/08/15 11:30 | Nikol Palecek v Andjela Lopicic | 1-6,7-6,10-2 |
| UTR Pro Tennis Series Beograd Women | 2021/07/18 09:00 | Nikol Palecek v Andjela Jocovic | 6-1,1-6,3-6 |
| UTR Pro Tennis Series Beograd Women | 2021/07/17 10:00 | Nikol Palecek v Silvia Maria Costache | 7-6,6-2 |
| UTR Pro Tennis Series Beograd Women | 2021/07/15 10:30 | Nikol Palecek v Daria Lodikova | 2-6,5-7 |