Stadium: Court 2 Round: 25 Ground: Hardcourt outdoor
| ITF - W15 Monastir | 2021/09/21 09:00 | Honoka Kobayashi v Eleonora Alvisi | 6-4,6-3 |
| ITF - W15 Monastir | 2021/09/20 13:00 | Honoka Kobayashi v Snehal Mane | 6-1,6-1 |
| ITF - W15 Antalya | 2021/02/14 06:00 | Honoka Kobayashi v Denislava Glushkova | 1-6,6-3,6-10 |
| ITF - W15 Antalya | 2021/02/08 09:00 | Julia Kimmelmann v Honoka Kobayashi | 6-3,6-2 |
| ITF - W15 Antalya | 2021/02/07 06:00 | Honoka Kobayashi v Anja Wildgruber | 7-6,4-6,10-6 |
| ITF - W15 Antalya | 2021/02/03 10:00 | Honoka Kobayashi v Ilay Yoruk | 3-6,3-6 |
| ITF - W15 Antalya | 2021/02/02 10:00 | Melania Delai v Honoka Kobayashi | 3-6,0-6 |
| ITF - W15 Antalya | 2021/02/02 07:00 | Honoka Kobayashi v Yui Chikaraishi | 6-3,6-1 |
| ITF - W15 Monastir | 2021/09/15 15:45 | Alessandra Simone v Himari Sato | 7-5,6-3 |
| ITF W15 - Almada | 2021/07/13 10:00 | Yeon Woo Ku v Himari Sato | 6-1,6-3 |
| ITF W25 - Lissabon | 2021/07/05 12:35 | Himari Sato v Georgia Drummy | 3-6,1-6 |
| ITF W25 - Lissabon | 2021/07/04 14:35 | Himari Sato v Beatriz Neves | 6-0,6-0 |
| ITF W25 - Palma del Rio | 2021/06/28 16:55 | Karman Kaur Thandi v Himari Sato | 6-1,6-2 |
| ITF W25 - Palma del Rio | 2021/06/27 18:00 | Kayla Rizzolo v Himari Sato | 2-6,0-6 |
| ITF W25 Porto | 2021/06/21 17:00 | Ingrid Gamarra Martins v Himari Sato | 6-3,6-2 |
| ITF W25 Porto | 2021/06/21 13:30 | Himari Sato v Luisa Pelayo | 6-1,6-1 |