| ITF Women Fukuoka Qual | 2017/05/07 01:00 | Nagisa Imamura v Mihoki Miyahara | 6-3,6-2 |
| ITF Women Gifu Qual | 2017/04/30 01:00 | Yukina Saigo v Mihoki Miyahara | 6-1,6-7,6-4 |
| ITF Women Kofu Qual | 2017/03/25 03:30 | Aiko Yoshitomi v Mihoki Miyahara | 6-4,6-3 |
| ITF Women Yokohama Qual | 2017/03/05 06:00 | Aki Yamasoto v Mihoki Miyahara | 6-3,6-2 |
| ITF Women Hong Kong | 2016/12/24 02:00 | Wushuang Zheng v Mihoki Miyahara | 5-7,6-4,6-1 |
| ITF Women Toyota Qual | 2016/11/13 06:35 | Mihoki Miyahara v Kamonwan Buayam | 2-6,3-6 |
| ITF Women Toyota Qual | 2016/11/13 02:05 | Mihoki Miyahara v Yurie Takanishi | 6-4,6-1 |
| ITF Women Tokyo Qual | 2016/11/05 02:35 | Mihoki Miyahara v Naomi Cheong | 2-6,0-6 |
| ITF Women Fukuoka | 2017/05/11 01:00 | Varatchaya Wongteanchai v Riko Sawayanagi | 7-5,6-4 |
| ITF Women Fukuoka | 2017/05/10 03:55 | Yukina Saigo v Riko Sawayanagi | 0-6,6-4,2-6 |
| ITF Women Gifu | 2017/05/03 01:00 | Riko Sawayanagi v Arina Rodionova | 6-2,3-6,5-7 |
| WTA - Zhengzhou | 2017/04/19 06:20 | Shuai Peng v Riko Sawayanagi | 6-1,6-4 |
| WTA - Zhengzhou | 2017/04/18 05:55 | Miyu Kato v Riko Sawayanagi | 6-7,0-6 |
| ITF Women Nanning | 2017/04/11 05:30 | Riko Sawayanagi v Qianhui Tang | 1-6,5-7 |
| ITF Women Kashiwa | 2017/04/05 02:15 | Makoto Ninomiya v Riko Sawayanagi | 5-7,6-3,6-3 |
| ITF Women Kofu | 2017/03/31 01:00 | Na-Lae Han v Riko Sawayanagi | 6-2,6-2 |