Stadium: Court 8 Round: 54 Ground: Hardcourt outdoor
| ITF Women Makinohara Qual | 2016/10/09 04:00 | Mitsumi Kawasaki v Ayumi Koshiishi | 2-6,6-7 |
| ITF Women Hamamatsu | 2017/10/18 02:30 | Momoko Kobori v Ayumi Koshiishi | 7-6,6-3 |
| ITF Women Hamamatsu Qual | 2017/10/17 06:00 | Mami Hasegawa v Ayumi Koshiishi | 2-6,6-3,6-7 |
| ITF Women Hamamatsu Qual | 2017/10/16 02:00 | Aoiko Goto v Ayumi Koshiishi | 0-6,2-6 |
| ITF Women Hamamatsu Qual | 2017/10/14 00:00 | Makoto Yamaguchi v Ayumi Koshiishi | 1-6,4-6 |
| ITF Women Makinohara | 2017/10/12 03:20 | Miyabi Inoue v Ayumi Koshiishi | 6-4,6-2 |
| ITF Women Makinohara | 2017/10/10 02:55 | Mayuka Aikawa v Ayumi Koshiishi | 2-6,3-6 |
| ITF Women Makinohara Qual | 2017/10/09 00:30 | Chie Kezuka v Ayumi Koshiishi | 3-6,3-6 |
| ITF Women Kyoto | 2017/09/05 02:40 | Ramu Ueda v Ayumi Koshiishi | 6-4,6-2 |
| ITF Women Hamamatsu | 2017/10/20 01:00 | Ayano Shimizu v Mitsumi Kawasaki | 6-3,6-2 |
| ITF Women Hamamatsu | 2017/10/19 04:00 | Mitsumi Kawasaki v Yukina Saigo | 4-6,6-4,6-1 |
| ITF Women Hamamatsu | 2017/10/18 01:50 | Mitsumi Kawasaki v Ayaka Okuno | 6-1,6-1 |
| ITF Women Hamamatsu Qual | 2017/10/17 06:00 | Eimi Friant v Mitsumi Kawasaki | 1-6,1-6 |
| ITF Women Hamamatsu Qual | 2017/10/17 01:00 | Varvara Kuznetsova v Mitsumi Kawasaki | 2-6,4-6 |
| ITF Women Hamamatsu Qual | 2017/10/14 01:00 | Miki Miyamura v Mitsumi Kawasaki | 5-7,1-6 |
| ITF Women Makinohara Qual | 2017/10/09 02:10 | Reina Takahashi v Mitsumi Kawasaki | 6-3,6-3 |
| ITF Women Kyoto | 2017/09/05 01:00 | Akari Inoue v Mitsumi Kawasaki | 6-2,6-4 |