Stadium: Court 7 Round: 44 Ground: Hardcourt outdoor
| ITF - W15 Monastir | 2021/04/29 12:35 | Imanishi, Miharu v Ayumi Koshiishi | 5-7,6-3,7-6 |
| ITF - W15 Monastir | 2021/04/28 08:30 | Ayumi Koshiishi v Akid, Sara | 6-0,6-1 |
| ITF - W15 Monastir | 2021/04/27 09:30 | Olga Helmi v Ayumi Koshiishi | 6-4,6-7,6-10 |
| ITF - W15 Monastir | 2021/04/26 12:30 | Laura Mair v Ayumi Koshiishi | 6-4,1-6,4-10 |
| ITF - W15 Monastir | 2021/04/25 16:00 | Giulia Carbonaro v Ayumi Koshiishi | 4-6,7-5,2-10 |
| ITF - W15 Antalya | 2021/02/16 11:00 | Ane M D Olmo v Ayumi Koshiishi | 6-4,7-5 |
| ITF - W15 Antalya | 2021/02/15 12:30 | Ilay Yoruk v Ayumi Koshiishi | 4-6,1-6 |
| ITF - W15 Antalya | 2021/02/14 06:00 | Nana Kawagishi v Ayumi Koshiishi | 6-7,6-7 |
| ITF - W15 Monastir | 2021/03/28 15:00 | Sartori, Giulia v Yui Chikaraishi | 2-6,7-5,6-10 |
| ITF - W15 Monastir | 2021/03/21 13:00 | Sartori, Giulia v Jennifer Ruggeri | 1-6,6-3,8-10 |