Stadium: Court A Round: 26
| Karuizawa, Singles W-WITF-JPN-10A | 2018/05/22 01:00 | Miyamoto, Ayumi v Michika Ozeki | 6-1,6-1 |
| ITF Women Kyoto | 2018/09/04 04:45 | Michika Ozeki v Ayaka Ozeki | 6-2,6-1 |
| ITF Women Nanao | 2018/08/28 03:00 | Himeno Sakatsume v Michika Ozeki | 6-2,6-7,6-4 |
| Tsukuba, Singles W-WITF-JPN-09A | 2018/08/22 00:30 | Chihiro Muramatsu v Michika Ozeki | 6-1,6-2 |
| Tsukuba, Singles W-WITF-JPN-09A | 2018/08/20 02:50 | Michika Ozeki v Nishimoto, Megumi | 6-3,7-5 |
| Nonthaburi, Simples W-WITF-THA-09A | 2018/08/15 02:00 | Michika Ozeki v Xiyu Wang | 1-6,2-6 |
| Nonthaburi, Simples W-WITF-THA-09A | 2018/08/13 02:00 | Michika Ozeki v Shiho Akita | 6-1,6-2 |
| Nonthaburi, Simples W-WITF-THA-09A | 2018/08/12 03:55 | Michika Ozeki v Lorbergs, Genevieve | 6-4,6-2 |
| Nonthaburi, Simples W-WITF-THA-09A | 2018/08/11 06:45 | Michika Ozeki v Inoue, Akari | 6-3,6-4 |
| ITF Women Kyoto | 2018/09/04 10:15 | Ren, Jia Qi v Miyamoto, Ayumi | 4-6,4-6 |
| ITF Women Nanao | 2018/08/26 05:00 | Okawa, Misa v Miyamoto, Ayumi | 7-6,5-7,6-2 |
| Tsukuba, Singles W-WITF-JPN-09A | 2018/08/19 03:00 | Haruna Arakawa v Miyamoto, Ayumi | 4-6,6-4,6-1 |
| Kofu, Singles W-WITF-JPN-02A | 2018/06/14 01:00 | Miyamoto, Ayumi v Chang, Kai-Chen | 3-6,7-5,4-6 |
| Kofu, Singles W-WITF-JPN-02A | 2018/06/12 02:50 | Miyamoto, Ayumi v Mana Kawamura | 3-6,6-1,7-5 |
| Kofu, Singles Qualifying W-WITF-JPN-02A | 2018/06/10 00:00 | Miyamoto, Ayumi v Hikaru Sato | 6-1,6-0 |
| Kofu, Singles Qualifying W-WITF-JPN-02A | 2018/06/09 04:00 | Miyamoto, Ayumi v Funa Kozaki | 6-2,6-2 |
| Karuizawa, Singles W-WITF-JPN-10A | 2018/05/24 04:15 | Miyamoto, Ayumi v Hondo, Sakura | 5-7,1-6 |