Round: 25 Ground: Hardcourt outdoor
| ITF Women Hong Kong | 2017/12/24 02:00 | Ayumi Koshiishi v Detkovskaya, Dariya | 7-5,6-2 |
| ITF Women Toyota Qual | 2017/11/12 03:05 | Kim, Na Ri v Ayumi Koshiishi | 6-3,6-2 |
| ITF Women Tokyo Qual | 2017/11/05 02:55 | Ayumi Koshiishi v Cheong, Naomi | 6-7,1-6 |
| ITF Women Tokyo Qual | 2017/11/04 05:35 | Ayumi Koshiishi v Kawasaki, Mitsumi | 6-4,5-7,6-4 |
| Hamamatsu, Singles W-WITF-JPN-12A | 2017/10/18 02:30 | Momoko Kobori v Ayumi Koshiishi | 7-6,6-3 |
| ITF Women Hamamatsu Qual | 2017/10/17 06:00 | Hasegawa, Mami 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 Hong Kong | 2017/12/24 02:00 | Mu, Shou Na v Sheng, Yuqi | 3-6,6-4,3-6 |
| ITF Women Hong Kong | 2017/12/23 04:00 | Zuo, Pinyi v Sheng, Yuqi | 1-6,1-6 |
| ITF Women Solapur | 2017/12/05 05:45 | Sheng, Yuqi v Doroshina, Olga | 0-6,3-6 |
| ITF Women Solapur | 2017/12/03 04:00 | Sheng, Yuqi v Yeddula, Sai Dedeepya | 6-1,6-1 |
| ITF Women Indore | 2017/11/29 07:55 | Sheng, Yuqi v Doroshina, Olga | 1-6,3-6 |
| ITF Women Indore | 2017/11/27 10:45 | Sheng, Yuqi v Banwani, Prakriti | 6-1,6-0 |
| ITF Women Indore | 2017/11/26 04:30 | Sheng, Yuqi v Shrivalli Rashmikaa Bhamidipaty | 6-7,4-6 |
| ITF Women Shenzhen Qual | 2017/11/06 03:00 | Ye, Qiu Yu v Sheng, Yuqi | 6-2,6-3 |