Stadium: Court 5 Round: 25 Ground: Synthetic outdoor
| ITF Women Hamamatsu Qual | 2017/10/17 06:00 | Friant, Eimi v Kawasaki, Mitsumi | 1-6,1-6 |
| ITF Women Hamamatsu Qual | 2017/10/17 01:00 | Kuznetsova, Varvara v Kawasaki, Mitsumi | 2-6,4-6 |
| ITF Women Hamamatsu Qual | 2017/10/14 01:00 | Miyamura, Miki v Kawasaki, Mitsumi | 5-7,1-6 |
| ITF Women Makinohara Qual | 2017/10/09 02:10 | Reina Takahashi v Kawasaki, Mitsumi | 6-3,6-3 |
| ITF Women Kyoto | 2017/09/05 01:00 | Inoue, Akari v Kawasaki, Mitsumi | 6-2,6-4 |
| ITF Women Nanao Qual | 2017/08/27 01:00 | Mana Kawamura v Kawasaki, Mitsumi | 6-2,6-2 |
| ITF Women Hong Kong | 2017/07/25 07:50 | Kawasaki, Mitsumi v Meiling Wang | 3-6,0-6 |
| Kofu, Singles Qualifying W-WITF-JPN-02A | 2017/06/11 04:00 | Abe, Arisa v Kawasaki, Mitsumi | 2-6,6-3,7-6 |
| Makinohara, Singles Qualifying W-WITF-JPN-15A | 2017/10/11 00:30 | Okuno, Ayaka v Nishimoto, Megumi | 3-6,0-6 |
| WTA Tokyo Qual | 2017/09/16 01:00 | Okuno, Ayaka v Basak Eraydin | 1-6,2-6 |
| ITF Women Kyoto | 2017/09/05 06:55 | Okuno, Ayaka v Mei Yamaguchi | 4-6,2-6 |
| ITF Women Nanao | 2017/08/29 01:00 | Katy Dunne v Okuno, Ayaka | 6-4,6-1 |
| Tsukuba, Singles W-WITF-JPN-09A | 2017/08/24 00:40 | Akiko Omae v Okuno, Ayaka | 6-4,6-3 |
| Tsukuba, Singles W-WITF-JPN-09A | 2017/08/23 02:40 | Yoshitomi, Aiko v Okuno, Ayaka | 2-6,5-7 |
| ITF Women Fort Worth | 2017/08/02 23:05 | Okuno, Ayaka v Marcela Zacarias | 3-6,4-6 |
| Hua Hin, Singles W-WITF-THA-07A | 2017/07/18 06:25 | Okuno, Ayaka v Lorbergs, Genevieve | 3-6,7-5,4-6 |