Stadium: Court 5 Round: 44
| ITF Women Daegu Qual | 2018/06/17 02:00 | Lee, Han-Bit v Miyahara, Mihoki | 4-6,2-6 |
| ITF Women Gyeongsan Qual | 2018/06/11 02:00 | Koike, Satsuki v Miyahara, Mihoki | 6-2,6-2 |
| ITF Women Kurume Qual | 2018/05/14 01:00 | Miyahara, Mihoki v Nishimoto, Megumi | 6-2,6-7,1-6 |
| ITF Women Kurume Qual | 2018/05/13 05:55 | Miyahara, Mihoki v Aratake, Meina | 6-1,6-1 |
| ITF Women Fukuoka Qual | 2018/05/06 05:25 | Hosonuma, Chisa v Miyahara, Mihoki | 6-1,7-6 |
| Nishi-Tama, Singles W-WITF-JPN-01A | 2018/03/18 01:00 | Kezuka, Chie v Miyahara, Mihoki | 6-2,6-2 |
| ITF Women Hong Kong | 2017/12/24 02:00 | Aldila Sutjiadi v Miyahara, Mihoki | 6-1,6-2 |
| ITF Women Hong Kong | 2017/12/23 04:00 | Lam, Wing Kiu Jacqueline v Miyahara, Mihoki | 4-6,1-6 |
| ITF Women Gyeongsan | 2018/06/15 01:00 | Eri Shimizu v Liu, Chang | 6-4,6-0 |
| ITF Women Gyeongsan | 2018/06/14 02:45 | Liu, Chang v Kanako Morisaki | 6-3,0-6,6-0 |
| ITF Women Gyeongsan | 2018/06/13 04:10 | Liu, Chang v Park, Ryeong Gyeong | 6-3,6-3 |
| ITF Women Sangju | 2018/06/09 01:00 | Liu, Chang v Ho Ching Wu | 2-6,3-6 |
| ITF Women Sangju | 2018/06/08 03:50 | Liu, Chang v Eunhye Lee | 7-6,6-3 |
| ITF Women Sangju | 2018/06/07 01:00 | Liu, Chang v Eri Shimizu | 6-2,6-1 |
| ITF Women Sangju | 2018/06/05 06:20 | Hanna Chang v Liu, Chang | 7-6,6-7,2-6 |
| Changwon, Singles Qualifying W-WITF-KOR-01A | 2018/05/22 04:05 | Liu, Chang v Ayumi Koshiishi | 1-6,3-6 |