Stadium: Court C Round: 62 Ground: Hardcourt outdoor
| ITF Women Tokyo Qual | 2017/11/04 02:35 | Kanako Osafune v Moyuka Uchijima | 2-6,2-6 |
| ITF Women Nonthaburi | 2017/10/10 03:50 | Chompoothip Jandakate v Kanako Osafune | 7-5,6-2 |
| ITF Women Nonthaburi Qual | 2017/10/08 02:00 | Punnin Kovapitukted v Kanako Osafune | 4-6,4-6 |
| ITF Women Nonthaburi Qual | 2017/10/02 05:00 | I-Hsuan Cho v Kanako Osafune | 7-5,6-0 |
| ITF Women Nonthaburi Qual | 2017/10/01 10:20 | Jaipet Anontaweesil v Kanako Osafune | 0-6,1-6 |
| ITF Women Hua Hin Qual | 2017/09/24 15:00 | Kanako Osafune v Natasha Palha | 4-6,4-6 |
| ITF Women Hua Hin Qual | 2017/09/23 05:25 | Kanako Osafune v Nithya Raj Babu Raj | 6-4,6-2 |
| ITF Women Hua Hin Qual | 2017/09/17 07:05 | Sai Samhitha Chamarthi v Kanako Osafune | 6-2,4-6,6-2 |
| ITF Women Toyota Qual | 2018/03/12 03:05 | Mayu Iwai v Rika Fujiwara | 3-6,4-6 |
| ITF Women Toyota Qual | 2018/03/11 03:30 | Riko Sawayanagi v Mayu Iwai | 6-0,1-6,2-6 |
| ITF Women Toyota Qual | 2018/03/10 03:00 | Saki Imamura v Mayu Iwai | 5-7,3-6 |
| ITF Women Kofu Qual | 2017/06/11 04:00 | Mayu Iwai v Aoi Ishino | 6-0,6-7,4-6 |
| ITF Women Nishi-Tama | 2017/03/19 01:00 | Yuki Kristina Chiang v Mayu Iwai | 6-2,6-2 |
| Challenger Kaohsiung Qual | 2016/06/14 03:00 | Ayano Shimizu v Mayu Iwai | 6-3,6-3 |