Stadium: Court 14 Round: 26 Ground: Synthetic outdoor
| ITF Women Karuizawa | 2018/05/22 01:00 | Ayumi Miyamoto v Michika Ozeki | 6-1,6-1 |
| ITF Women Karuizawa Qual | 2018/05/21 01:00 | Ayumi Miyamoto v Natsuho Nakazawa | 6-1,6-2 |
| ITF Women Kurume Qual | 2018/05/13 00:30 | Ayumi Miyamoto v Mai Hontama | 2-6,7-6,2-6 |
| ITF Women Fukuoka Qual | 2018/05/06 06:00 | Tara Moore v Ayumi Miyamoto | 6-4,6-2 |
| ITF Women Gifu Qual | 2018/04/29 06:45 | Kyoka Okamura v Ayumi Miyamoto | 6-7,7-6,7-6 |
| ITF Women Gifu Qual | 2018/04/29 03:15 | Ayumi Miyamoto v Yuki Naito | 6-2,7-5 |
| ITF Women Osaka Qual | 2018/04/08 03:30 | Ayumi Miyamoto v Xinyu Wang | 1-6,3-6 |
| ITF Women Osaka Qual | 2018/04/07 05:30 | Chihiro Takayama v Ayumi Miyamoto | 2-6,4-6 |
| ITF Women Karuizawa | 2018/05/24 01:15 | Sakura Hondo v Yue Yuan | 6-1,6-3 |
| ITF Women Karuizawa Qual | 2018/05/21 02:40 | Sakura Hondo v Reina Takahashi | 6-1,5-7,6-1 |
| ITF Women Karuizawa Qual | 2018/05/20 04:00 | Sakura Hondo v Lisa-Marie Rioux | 3-6,6-1,6-1 |
| ITF Women Kurume | 2018/05/16 01:00 | Haruka Kaji v Sakura Hondo | 6-3,6-3 |
| ITF Women Kurume Qual | 2018/05/15 01:00 | Sakura Hondo v Michika Ozeki | 0-6,6-3,6-2 |
| ITF Women Kurume Qual | 2018/05/14 01:00 | Yukina Saigo v Sakura Hondo | 3-6,6-4,5-7 |
| ITF Women Kurume Qual | 2018/05/13 00:30 | Sakura Hondo v Ayaka Okuno | 6-7,6-4,7-6 |
| ITF Women Fukuoka Qual | 2018/05/08 01:00 | Mina Miyahara v Sakura Hondo | 6-2,3-6,7-5 |