Stadium: Court 5 Round: 26 Ground: Hardcourt outdoor
| ITF W15 Kawaguchi | 2023/06/14 05:35 | Ayumi Koshiishi v Kisa Yoshioka | 7-6,6-3 |
| ITF W25 Tokyo | 2023/05/31 01:00 | Yukina Saigo v Ayumi Koshiishi | 6-4,6-1 |
| ITF W25 Goyang | 2023/05/22 01:00 | Ayumi Koshiishi v Yi Tsen Cho | 2-6,0-6 |
| ITF W25 Goyang | 2023/05/21 01:00 | Ayumi Koshiishi v Eun Ji Lee | 6-3,6-3 |
| ITF W25 Incheon | 2023/05/15 06:40 | Ayumi Koshiishi v Yu Jin Ahn | 4-6,3-6 |
| ITF W25 Incheon | 2023/05/15 02:40 | Ayumi Koshiishi v Qianhui Tang | 5-7,6-3,10-4 |
| ITF W25 Osaka | 2023/04/09 03:00 | Kurea Hayasaka v Ayumi Koshiishi | 6-7,4-6 |
| ITF W25 Kashiwa | 2023/04/03 01:00 | Katarina Kozarov v Ayumi Koshiishi | 6-0,6-3 |
| ITF W15 Kawaguchi | 2023/06/14 00:00 | Mua Shigeta v Rio Tsuda | 1-6,4-6 |
| ITF W15 Kawaguchi | 2023/06/13 03:30 | Rio Tsuda v Kaho Oyama | 7-6,6-1 |
| ITF W15 Kawaguchi | 2023/06/13 00:00 | Rio Tsuda v Reina Goto | 6-4,6-2 |
| ITF W15 Kashiwa | 2023/06/08 00:50 | Chia Yi Tsao v Rio Tsuda | 6-1,6-2 |
| ITF W15 Kashiwa | 2023/06/07 03:50 | Rio Tsuda v Akiko Omae | 3-6,7-5,7-5 |
| ITF W15 Kashiwa | 2023/06/06 01:00 | Rio Tsuda v Shiho Shibata | 6-2,6-0 |
| ITF W80 Gifu | 2023/05/01 01:00 | Rio Tsuda v Hayu Kinoshita | 3-6,3-6 |
| ITF W15 Fukui | 2023/04/26 07:05 | Rio Tsuda v Ya-Hsuan Lee | 2-6,2-6 |