Round: 62 Ground: Hardcourt outdoor
| ITF Women Nishi-Tama | 2017/03/18 01:00 | Kanako Osafune v Rika Fujiwara | 3-6,2-6 |
| ITF Women Sharm El Sheikh | 2017/02/04 08:00 | Polina Golubovskaya v Kanako Osafune | 6-3,7-5 |
| ITF Women Cairo | 2017/01/31 09:30 | Shelby Talcott v Kanako Osafune | 6-1,6-3 |
| ITF Women Hamamatsu Qual | 2016/10/15 03:00 | Nao Shimoji v Kanako Osafune | 6-2,1-6,6-2 |
| ITF Women Kyoto | 2016/09/07 02:30 | Kanako Osafune v Aiko Yoshitomi | 2-6,3-6 |
| ITF Women Kyoto | 2016/09/06 09:10 | Kanako Osafune v Mihoki Miyahara | 7-5,2-6,6-3 |
| ITF Women Tampa | 2017/03/18 15:40 | Michelle Larcher de Brito v Mari Osaka | 3-6,7-5,6-4 |
| ITF Women Tampa | 2017/03/17 14:00 | Renata Zarazua v Mari Osaka | 1-6,0-6 |
| ITF Women Tampa | 2017/03/16 14:00 | Mari Osaka v Katerina Kramperova | 7-6,6-4 |
| ITF Women Tampa | 2017/03/14 15:00 | Veronika Miroshnichenko v Mari Osaka | 2-6,1-6 |
| ITF Women Rancho Santa Fe Qual | 2017/02/19 17:00 | Mari Osaka v Ashley Kratzer | 6-7,3-6 |
| ITF Women Surprise Qual | 2017/02/14 16:00 | Anastasia Potapova v Mari Osaka | 6-1,7-5 |
| ITF Women Surprise Qual | 2017/02/13 16:00 | Mari Osaka v Chanelle Van Nguyen | 6-4,6-3 |
| ITF Women Surprise Qual | 2017/02/12 16:00 | Steffi Carruthers v Mari Osaka | 4-6,2-6 |