Stadium: Court C Round: 25
| ITF Women Nanao | 2017/08/29 01:00 | Katy Dunne v Ayaka Okuno | 6-4,6-1 |
| ITF Women Tsukuba | 2017/08/24 00:40 | Akiko Omae v Ayaka Okuno | 6-4,6-3 |
| ITF Women Tsukuba | 2017/08/23 02:40 | Aiko Yoshitomi v Ayaka Okuno | 2-6,5-7 |
| ITF Women Fort Worth | 2017/08/02 23:05 | Ayaka Okuno v Marcela Zacarias | 3-6,4-6 |
| ITF Women Hua Hin | 2017/07/18 06:25 | Ayaka Okuno v Genevieve Lorbergs | 3-6,7-5,4-6 |
| ITF Women Hua Hin | 2017/07/11 08:05 | Lavinia Tananta v Ayaka Okuno | 6-2,5-7,6-3 |
| ITF Women Tokyo | 2017/06/07 01:00 | Ayaka Okuno v Kyoka Okamura | 6-7,1-6 |
| ITF Women Wuhan | 2017/05/31 04:50 | Fang Ying Xun v Ayaka Okuno | 6-2,6-2 |
| ITF Women Kyoto | 2017/09/04 01:00 | Suzuka Furukawa v Mei Yamaguchi | 0-6,5-7 |
| ITF Women Kofu Qual | 2017/06/11 05:00 | Kumi So v Mei Yamaguchi | 6-4,7-6 |
| ITF Women Karuizawa Qual | 2017/05/21 04:00 | Mihoki Miyahara v Mei Yamaguchi | 7-6,6-4 |
| ITF Women Karuizawa Qual | 2017/05/20 05:30 | Chinatsu Shimizu v Mei Yamaguchi | 2-6,7-6,3-6 |
| ITF Women Kurume Qual | 2017/05/15 01:30 | Erina Hayashi v Mei Yamaguchi | 6-4,6-1 |
| ITF Women Kurume Qual | 2017/05/14 08:15 | Mei Yamaguchi v Kotomi Takahata | 6-1,7-6 |
| ITF Women Kurume Qual | 2017/05/14 03:15 | Ayano Sonoda v Mei Yamaguchi | 0-6,3-6 |
| ITF Women Fukuoka Qual | 2017/05/07 06:00 | Mei Yamaguchi v Monique Adamczak | 1-6,3-6 |