| ITF Women Goyang | 2017/05/28 03:00 | Osaka, Mari v Peangtarn Plipuech | 6-7,0-6 |
| ITF Women Goyang | 2017/05/27 03:40 | Osaka, Mari v Haruka Kaji | 6-1,3-6,6-2 |
| ITF Women Goyang | 2017/05/26 01:00 | Osaka, Mari v Jovanovic, Masa | 6-3,6-3 |
| ITF Women Goyang | 2017/05/25 01:00 | Osaka, Mari v Murray Sharan, S. | 2-6,6-1,6-0 |
| ITF Women Goyang | 2017/05/24 03:45 | Khazaniuk, Deniz v Osaka, Mari | 1-6,4-6 |
| ITF Women Incheon | 2017/05/17 03:30 | Osaka, Mari v Lao, Danielle | 4-6,0-6 |
| ITF Women Changwon | 2017/05/11 01:00 | Hong, Seung-Yeon v Osaka, Mari | 7-5,6-2 |
| Irapuato, Singles W-WITF-MEX-01A | 2017/04/15 00:40 | Osaka, Mari v Honcova, Michaela | 4-6,6-7 |