Stadium: Court C Round: 25
| ITF Women Taipei | 2018/07/23 03:00 | Yi Tsen Cho v Kanako Osafune | 3-6,6-2,7-6 |
| ITF Women Kofu Qual | 2018/06/09 04:00 | Hikaru Sato v Kanako Osafune | 6-3,6-2 |
| ITF Women Kofu Qual | 2018/06/09 00:00 | Sumire Ri v Kanako Osafune | 4-6,1-6 |
| ITF Women Sharm El Sheikh | 2018/04/08 08:00 | Barbora Miklova v Kanako Osafune | 6-3,6-2 |
| ITF Women Sharm El Sheikh | 2018/04/01 08:00 | Barbora Miklova v Kanako Osafune | 6-4,6-3 |
| ITF Women Sharm El Sheikh | 2018/03/26 08:00 | Kanako Osafune v Bhuvana Kalva | 2-6,4-6 |
| ITF Women Sharm El Sheikh | 2018/03/25 10:30 | Maria Patrascu v Kanako Osafune | 4-6,3-6 |
| ITF Women Nishi-Tama | 2018/03/17 03:00 | Kanako Osafune v Mayu Iwai | 3-6,5-7 |
| ITF Women Tsukuba | 2018/08/19 00:30 | Nagi Hanatani v Mitsumi Kawasaki | 6-3,6-3 |
| ITF Women Nonthaburi | 2018/08/05 02:00 | Dabin Kim v Mitsumi Kawasaki | 7-6,6-3 |
| ITF Women Nonthaburi | 2018/08/04 02:00 | Mitsumi Kawasaki v Lisa-Marie Rioux | 7-5,6-4 |
| ITF Women Taipei | 2018/07/25 05:30 | Kwan Yau Ng v Mitsumi Kawasaki | 6-4,6-4 |
| ITF Women Hong Kong | 2018/07/09 05:55 | Reina Takahashi v Mitsumi Kawasaki | 6-0,7-5 |
| ITF Women Kofu | 2018/06/12 01:00 | Yuuki Tanaka v Mitsumi Kawasaki | 6-0,6-2 |
| ITF Women Karuizawa Qual | 2018/05/21 01:00 | Mitsumi Kawasaki v Rina Saigo | 1-6,2-6 |
| ITF Women Karuizawa Qual | 2018/05/20 02:30 | Mitsumi Kawasaki v Minami Akiyama | 6-3,6-3 |