Stadium: Court B2 Round: 54 Ground: Hardcourt outdoor
| ITF Women Nonthaburi | 2018/08/16 02:00 | Haruna Arakawa v Xiyu Wang | 1-6,1-6 |
| ITF Women Nonthaburi | 2018/08/15 03:55 | Bunyawi Thamchaiwat v Haruna Arakawa | 4-6,2-6 |
| ITF Women Nonthaburi | 2018/08/14 02:00 | Chompoothip Jandakate v Haruna Arakawa | 4-6,6-7 |
| ITF Women Nonthaburi | 2018/08/12 02:45 | Haruna Arakawa v Ola Abou Zekry | 6-2,6-7,6-2 |
| ITF Women Nonthaburi | 2018/08/06 05:05 | Xiyu Wang v Haruna Arakawa | 6-1,6-4 |
| ITF Women Nonthaburi | 2018/08/05 04:00 | Haruna Arakawa v Mahak Jain | 7-5,3-6,6-1 |
| ITF Women Nonthaburi | 2018/08/04 06:45 | Haruna Arakawa v Akari Inoue | 6-2,6-1 |
| ITF Women Granby Qual | 2018/07/22 20:30 | Akiko Omae v Haruna Arakawa | 6-1,7-6 |
| ITF Women Kofu | 2018/06/14 01:00 | Ayumi Miyamoto v Kai-Chen Chang | 3-6,7-5,4-6 |
| ITF Women Kofu | 2018/06/12 02:50 | Ayumi Miyamoto v Mana Kawamura | 3-6,6-1,7-5 |
| ITF Women Kofu Qual | 2018/06/10 00:00 | Ayumi Miyamoto v Hikaru Sato | 6-1,6-0 |
| ITF Women Kofu Qual | 2018/06/09 04:00 | Ayumi Miyamoto v Funa Kozaki | 6-2,6-2 |
| ITF Women Karuizawa | 2018/05/24 04:15 | Ayumi Miyamoto v Sakura Hondo | 5-7,1-6 |
| 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 |