Stadium: Court 9 Round: 25
| ITF Women Kofu | 2018/06/14 04:20 | Lisa-Marie Rioux v Michika Ozeki | 7-5,7-5 |
| ITF Women Kofu | 2018/06/12 03:05 | Michika Ozeki v Misa Eguchi | 6-1,3-6,6-3 |
| ITF Women Singapore | 2018/06/05 02:00 | Jovana Jaksic v Michika Ozeki | 6-3,6-1 |
| ITF Women Singapore Qual | 2018/06/03 02:00 | Michika Ozeki v Yee Loon Goh | 6-2,6-1 |
| ITF Women Karuizawa | 2018/05/22 01:00 | Ayumi Miyamoto v Michika Ozeki | 6-1,6-1 |
| 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 | Chisa Hosonuma v Michika Ozeki | 6-7,2-6 |
| ITF Women Kurume Qual | 2018/05/13 00:30 | Akari Inoue v Michika Ozeki | 2-6,6-1,4-6 |
| ITF Women Kofu | 2018/06/15 04:30 | Mai Hontama v Kai-Chen Chang | 6-3,6-3 |
| ITF Women Kofu | 2018/06/14 01:00 | Ayumi Miyamoto v Kai-Chen Chang | 3-6,7-5,4-6 |
| ITF Women Kofu | 2018/06/13 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 |