Round: 62 Ground: Hardcourt outdoor
| ITF Women Nishi-Tama | 2017/03/18 03:00 | Nina Stadler v Ayumi Koshiishi | 6-0,6-7,3-6 |
| ITF Women Yokohama Qual | 2017/03/05 06:00 | Haruka Kaji v Ayumi Koshiishi | 4-6,6-1,6-4 |
| ITF Women Toyota Qual | 2016/11/13 08:50 | Na Ri Kim v Ayumi Koshiishi | 7-5,3-6,6-3 |
| ITF Women Toyota Qual | 2016/11/13 02:10 | Sari Baba v Ayumi Koshiishi | 6-7,2-6 |
| ITF Women Makinohara | 2016/10/11 00:30 | Miharu Imanishi v Ayumi Koshiishi | 6-3,6-4 |
| ITF Women Makinohara Qual | 2016/10/10 02:00 | Ayumi Koshiishi v Natsumi Chimura | 6-2,6-2 |
| ITF Women Makinohara Qual | 2016/10/09 04:00 | Mitsumi Kawasaki v Ayumi Koshiishi | 2-6,6-7 |
| ITF Women Iizuka Qual | 2016/09/26 01:00 | Akari Inoue v Ayumi Koshiishi | 7-6,7-5 |
| ITF Women Nishi-Tama | 2017/03/18 03:00 | Robu Kajitani v Sari Baba | 6-4,6-2 |
| ITF Women Makinohara Qual | 2016/10/09 00:30 | Momoko Kobori v Robu Kajitani | 6-3,6-1 |
| ITF Women Iizuka Qual | 2016/09/26 02:20 | Ayano Shimizu v Robu Kajitani | 6-1,6-0 |
| ITF Women Kyoto | 2016/09/06 05:30 | Robu Kajitani v Miki Miyamura | 7-5,3-6,3-6 |
| ITF Women Noto Qual | 2016/08/28 05:00 | Mai Minokoshi v Robu Kajitani | 6-4,6-3 |
| ITF Women Noto Qual | 2016/08/28 01:00 | Eimi Friant v Robu Kajitani | 6-2,2-6,0-6 |