Stadium: Court 4 Round: 26 Ground: Hardcourt outdoor
| 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 |
| ITF Women Fukuoka Qual | 2018/05/06 06:00 | Tara Moore v Ayumi Miyamoto | 6-4,6-2 |
| ITF Women Kofu | 2018/06/13 02:45 | Ari Matsumoto v Kai-Chen Chang | 2-6,6-7 |
| ITF Women Changwon | 2018/05/23 01:00 | Kai-Chen Chang v Alina Silich | 4-6,6-7 |
| ITF Women Incheon | 2018/05/16 03:10 | Ching-Wen Hsu v Kai-Chen Chang | 6-0,6-3 |
| ITF Women Goyang | 2018/05/08 03:05 | Ji-Hee Choi v Kai-Chen Chang | 6-4,6-4 |
| ITF Women Kashiwa Qual | 2018/04/01 03:30 | Kai-Chen Chang v Makoto Ninomiya | 6-1,6-7,7-6 |
| ITF Women Kofu | 2018/03/27 04:20 | Giulia Gatto Monticone v Kai-Chen Chang | 6-2,6-3 |
| ITF Women Toyota | 2018/03/14 05:40 | Kai-Chen Chang v Ayla Aksu | 3-6,2-6 |
| ITF Women Yokohama | 2018/03/07 05:30 | Eri Hozumi v Kai-Chen Chang | 7-6,5-7,6-4 |