Stadium: COURT B Round: 27 Ground: Synthetic outdoor
| ITF Women Kyoto | 2018/09/05 06:00 | Michika Ozeki v Miyamoto, Ayumi | 6-1,6-2 |
| Karuizawa, Singles W-WITF-JPN-10A | 2018/05/22 01:00 | Miyamoto, Ayumi v Michika Ozeki | 6-1,6-1 |
| Makinohara, Singles Qualifying W-WITF-JPN-15A | 2018/10/11 00:30 | Mai Hontama v Miyamoto, Ayumi | 6-7,4-6 |
| Makinohara, Singles Qualifying W-WITF-JPN-15A | 2018/10/08 03:00 | Miyamoto, Ayumi v Inoue, Akari | 6-2,6-4 |
| Makinohara, Singles Qualifying W-WITF-JPN-15A | 2018/10/07 03:00 | Miyamoto, Ayumi v Mayuka Aikawa | 6-4,6-0 |
| ITF Women Kyoto | 2018/09/05 06:00 | Michika Ozeki v Miyamoto, Ayumi | 6-1,6-2 |
| 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 |
| Makinohara, Singles Qualifying W-WITF-JPN-15A | 2018/10/11 00:30 | Ayumi Koshiishi v Michika Ozeki | 2-6,0-6 |
| Makinohara, Singles Qualifying W-WITF-JPN-15A | 2018/10/10 00:30 | Michika Ozeki v Emily Appleton | 6-3,6-3 |
| ITF Women Kyoto | 2018/09/07 03:30 | Haruna Arakawa v Michika Ozeki | 6-3,6-3 |
| ITF Women Kyoto | 2018/09/06 01:00 | Michika Ozeki v Kezuka, Chie | 6-0,6-4 |
| ITF Women Kyoto | 2018/09/05 06:00 | Michika Ozeki v Miyamoto, Ayumi | 6-1,6-2 |
| 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 |