Stadium: Court 11 Round: 54
| ITF Women Karuizawa Qual | 2018/05/20 02:30 | Mitsumi Kawasaki v Minami Akiyama | 6-3,6-3 |
| ITF Women Kurume Qual | 2018/05/14 04:30 | Mitsumi Kawasaki v Anastasia E Nefedova | 3-6,2-6 |
| ITF Women Kurume Qual | 2018/05/13 08:40 | Mitsumi Kawasaki v Ayano Sonoda | 6-1,6-1 |
| ITF Women Fukuoka Qual | 2018/05/06 04:15 | Mitsumi Kawasaki v Abbie Myers | 1-6,2-6 |
| ITF Women Gifu Qual | 2018/04/29 01:00 | Hiroko Kuwata v Mitsumi Kawasaki | 6-0,7-6 |
| ITF Women Osaka Qual | 2018/04/07 01:30 | Rebecca Marino v Mitsumi Kawasaki | 6-1,6-4 |
| ITF Women Kofu Qual | 2018/03/25 02:30 | Erika Sema v Mitsumi Kawasaki | 6-0,6-2 |
| ITF Women Kofu Qual | 2018/03/24 03:00 | Chinatsu Shimizu v Mitsumi Kawasaki | 3-6,6-4,2-6 |
| ITF Women Karuizawa Qual | 2018/05/20 02:30 | Rina Saigo v Rio Kitagawa | 6-2,6-3 |
| ITF Women Karuizawa Qual | 2017/05/21 01:00 | Rina Saigo v Sari Baba | 4-6,2-6 |
| ITF Women Kyoto | 2016/09/04 01:00 | Ai Kamiyoshihara v Rina Saigo | 6-7,7-5,6-3 |
| ITF Women Noto Qual | 2016/08/28 01:00 | Rina Saigo v Himeno Sakatsume | 6-2,3-6,4-6 |
| ITF Women Hong Kong | 2016/07/10 02:00 | Alexandra Bozovic v Rina Saigo | 6-2,6-2 |