Stadium: Court 4 Round: 26 Ground: Hardcourt outdoor
| ITF W25 Ourense | 2021/08/18 15:00 | Olga Saez Larra v Nora Ayala Serra | 6-2,6-3 |
| ITF W60 San Bartolome De Tirajana | 2021/08/10 08:30 | Francisca Jorge v Olga Saez Larra | 6-0,6-2 |
| ITF W60 San Bartolome De Tirajana | 2021/08/09 14:50 | Martina Colmegna v Olga Saez Larra | 1-6,5-7 |
| ITF W60 San Bartolome De Tirajana | 2021/08/08 14:10 | Julieta Lara Estable v Olga Saez Larra | 0-6,4-6 |
| ITF W60 Biarritz | 2021/07/13 09:30 | Olga Saez Larra v Leolia Jeanjean | 1-6,3-6 |
| ITF W60 Biarritz | 2021/07/12 14:25 | Olga Saez Larra v Ines Nicault | 7-5,6-0 |
| ITF W25 Lisbon | 2021/07/06 13:25 | Junri Namigata v Olga Saez Larra | 6-3,6-1 |
| ITF W25 Palma del Rio | 2021/07/02 18:30 | Olga Saez Larra v Lulu Sun | 7-6,5-7,2-6 |
| ITF W25 Ourense | 2021/08/17 08:00 | Haruna Arakawa v Ya-Hsuan Lee | 0-6,7-6,3-6 |
| ITF W25 Radom | 2021/08/10 11:30 | Dalila Jakupovic v Ya-Hsuan Lee | 6-4,6-3 |
| ITF W25 Bydgoszcz | 2021/08/04 14:25 | Zeynep Sonmez v Ya-Hsuan Lee | 6-1,6-1 |
| ITF W60 Grodzisk Mazowiecki | 2021/07/27 10:20 | Ya-Hsuan Lee v Gabriela Talaba | 7-6,2-6,4-6 |
| ITF W15 Sharm El Sheikh | 2021/04/11 07:00 | Ya-Hsuan Lee v Olivia Gadecki | 6-3,6-3 |
| ITF W15 Sharm El Sheikh | 2021/04/10 07:00 | Ya-Hsuan Lee v Anna Siskova | 0-6,6-2,6-4 |
| ITF W15 Sharm El Sheikh | 2021/04/09 07:00 | Ya-Hsuan Lee v Arina Gabriela Vasilescu | 6-3,6-1 |
| ITF W15 Sharm El Sheikh | 2021/04/08 10:00 | Ya-Hsuan Lee v Andre Lukosiute | 1-6,6-1,6-4 |