Stadium: COURT C Round: 25 Ground: Synthetic outdoor
| ITF Women Nishi-Tama | 2018/03/21 02:00 | Ayumi Miyamoto v Risa Ushijima | 6-1,4-6,4-6 |
| ITF Women Kofu | 2017/06/14 01:00 | Ayumi Miyamoto v Risa Ushijima | 4-6,2-6 |
| ITF Women Kofu Qual | 2017/03/27 08:05 | Ayumi Miyamoto v Risa Ushijima | 6-1,3-6,5-7 |
| ITF Women Nanao | 2018/08/30 03:00 | Risa Ushijima v Himeno Sakatsume | 3-6,5-7 |
| ITF Women Nanao | 2018/08/29 06:05 | Momoko Kobori v Risa Ushijima | 5-7,2-6 |
| ITF Women Nanao | 2018/08/27 04:20 | Risa Ushijima v Ange Oby Kajuru | 7-5,6-2 |
| ITF Women Nanao | 2018/08/26 06:00 | Risa Ushijima v Michiru Furuya | 4-6,6-2,6-4 |
| ITF Women Tsukuba | 2018/08/23 03:30 | Xiyu Wang v Risa Ushijima | 6-4,6-1 |
| ITF Women Tsukuba | 2018/08/22 00:30 | Shiho Akita v Risa Ushijima | 2-6,2-6 |
| ITF Women Nonthaburi Qual | 2018/07/15 04:30 | Patcharin Cheapchandej v Risa Ushijima | 6-3,6-4 |
| ITF Women Nonthaburi Qual | 2018/07/14 06:25 | Rada Manataweewat v Risa Ushijima | 2-6,1-6 |
| ITF Women Makinohara | 2018/10/08 03:00 | Ayumi Miyamoto v Akari Inoue | 6-2,6-4 |
| ITF Women Makinohara | 2018/10/07 03:00 | Ayumi Miyamoto v Mayuka Aikawa | 6-4,6-0 |
| ITF Women Kyoto | 2018/09/05 06:00 | Michika Ozeki v Ayumi Miyamoto | 6-1,6-2 |
| ITF Women Kyoto | 2018/09/04 10:15 | Jia Qi Ren v Ayumi Miyamoto | 4-6,4-6 |
| ITF Women Nanao | 2018/08/26 05:00 | Misa Okawa v Ayumi Miyamoto | 7-6,5-7,6-2 |
| ITF Women Tsukuba | 2018/08/19 03:00 | Haruna Arakawa v Ayumi Miyamoto | 4-6,6-4,6-1 |
| 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 |