Stadium: Court 1 Round: 54 Ground: Hardcourt outdoor
| ITF W25 Radom | 2021/08/09 14:05 | Mana Kawamura v Sakura Hosogi | 6-1,6-1 |
| ITF W25 Radom | 2021/08/09 08:00 | Tamira Paszek v Sakura Hosogi | 6-2,3-6,8-10 |
| ITF W25 Bydgoszcz | 2021/08/03 10:15 | Tayisiya Morderger v Sakura Hosogi | 6-4,6-0 |
| ITF W25 Bydgoszcz | 2021/08/02 11:30 | Katerina Mandelikova v Sakura Hosogi | 1-6,2-6 |
| ITF W15 Monastir | 2021/06/06 08:30 | Himeno Sakatsume v Sakura Hosogi | 7-5,7-5 |
| ITF W15 Monastir | 2021/06/05 08:30 | Sakura Hosogi v Mell E R Gonzalez | 6-2,6-2 |
| ITF W15 Monastir | 2021/06/04 08:30 | Lamis Alhussein Abdel Aziz v Sakura Hosogi | 0-6,0-6 |
| ITF W15 Monastir | 2021/06/03 10:00 | Hwiwon Wi v Sakura Hosogi | 0-6,1-6 |
| ITF W15 Savitaipale | 2021/07/26 07:00 | Marissa Minetti v Natalia Fehr | 6-3,6-1 |
| ITF W15 Vilnius | 2021/06/06 09:00 | Natalia Fehr v Saara Orav | 1-6,1-6 |
| ITF W15 Banja Luka | 2021/05/30 08:15 | Mia Ristic v Natalia Fehr | 6-2,6-0 |
| ITF W15 Sibenik | 2021/05/23 12:00 | Natalia Fehr v Janika K Alzugaray | 4-6,7-6,7-10 |
| ITF W25 Manacor | 2021/03/07 11:00 | Natalia Fehr v Carolin Raschdorf | 3-6,2-6 |
| ITF W15 Antalya | 2021/01/11 07:00 | Ozlem Uslu v Natalia Fehr | 6-1,6-0 |
| ITF W15 Antalya | 2021/01/10 06:00 | Natalia Fehr v Beyza Yaniklar | 6-2,6-2 |
| ITF W15 Antalya | 2021/01/03 07:00 | Natalia Fehr v Liubov Demidova | 6-2,3-6,9-11 |