Stadium: Court 2 Round: 62 Ground: Grass
| ITF Women Hamamatsu Qual | 2017/10/16 02:00 | Chihiro Takayama v Mami Hasegawa | 3-6,5-7 |
| ITF Women Makinohara | 2017/10/10 00:30 | Mai Hontama v Mami Hasegawa | 6-2,2-6,6-3 |
| ITF Women Makinohara Qual | 2017/10/09 00:30 | Mami Hasegawa v Mei Yamaguchi | 7-5,6-1 |
| ITF Women Makinohara Qual | 2017/10/08 03:30 | Varvara Kuznetsova v Mami Hasegawa | 4-6,2-6 |
| ITF Women Hua Hin Qual | 2017/09/09 03:00 | Tamaryn Hendler v Mami Hasegawa | 6-2,6-1 |
| ITF Women Nanjing Qual | 2017/02/26 02:00 | Shuyue Ma v Mami Hasegawa | 6-3,7-5 |
| ITF Women Nanjing Qual | 2017/02/25 02:00 | Pinyi Zuo v Mami Hasegawa | 4-6,0-6 |
| ITF Women Toyota Qual | 2016/11/13 04:00 | Mami Hasegawa v Akari Inoue | 2-6,6-4,4-6 |
| 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 Nanao | 2017/08/29 02:45 | Ayumi Koshiishi v Miyabi Inoue | 2-6,3-6 |
| ITF Women Tsukuba Qual | 2017/08/20 00:30 | Aiko Yoshitomi v Ayumi Koshiishi | 7-5,4-6,6-3 |