Stadium: Court 3 Round: 25 Ground: Hardcourt outdoor
| ITF - W15 Sharm El Sheikh | 2021/10/12 08:00 | Maria Lota Kaul v Xichen Zhao | 6-3,5-7,7-10 |
| ITF - W15 Sharm El Sheikh | 2021/10/11 09:00 | Maria Lota Kaul v Kate Uzhylovska | 6-0,6-0 |
| ITF - W25 Jablonec nad Nisou | 2021/09/13 08:00 | Maria Lota Kaul v Darja Vidmanova | 2-6,1-6 |
| ITF - W25 Jablonec nad Nisou | 2021/09/12 08:30 | Zuzana Bohatova v Maria Lota Kaul | 2-6,5-7 |
| ITF - W15 Varna | 2021/09/08 08:00 | Chiara Catini v Maria Lota Kaul | 6-4,6-1 |
| ITF - W60 Collonge-Bellerive | 2021/08/30 12:10 | Verena Meliss v Maria Lota Kaul | 6-4,6-1 |
| ITF - W25 Braunschweig | 2021/08/23 08:30 | Noma Noha Akugue v Maria Lota Kaul | 4-6,6-2,10-6 |
| ITF - W25 Vrnjacka Banja | 2021/08/17 07:30 | Aneta Laboutkova v Maria Lota Kaul | 6-1,6-0 |
| ITF - W15 Sharm El Sheikh | 2021/10/09 08:00 | Eri Shimizu v Lena Ruppert | 4-6,6-3,3-6 |
| ITF - W15 Sharm El Sheikh | 2021/10/08 10:15 | Xin Tong Wang v Eri Shimizu | 0-6,0-6 |
| ITF - W15 Sharm El Sheikh | 2021/10/07 11:30 | Zhuoxuan Bai v Eri Shimizu | 7-5,3-6,4-6 |
| ITF - W15 Sharm El Sheikh | 2021/10/06 13:45 | Yujiao Che v Eri Shimizu | 4-6,4-6 |
| ITF - W25 Viena | 2021/08/30 10:55 | Sapfo Sakellaridi v Eri Shimizu | 7-6,6-2 |
| ITF - W25 Viena | 2021/08/29 14:00 | Mila Masic v Eri Shimizu | 1-6,7-5,5-10 |
| ITF - W15 Bad Waltersdorf | 2021/08/24 11:45 | Eri Shimizu v Yeon Woo Ku | 4-6,6-2,4-6 |
| ITF - W15 Warmbad-Villach | 2021/08/19 12:10 | Eri Shimizu v Anna Turati | 2-6,5-7 |