| ITF W50 Guiyang WD | 09/11 06:00 | - | Lara Panfilov v Koshiishi/Sato | 7-5,6-2 | |
| ITF W50 Guiyang WD | 09/10 07:53 | - | Gao/Zeng v Koshiishi/Sato | 2-6,7-5,0-1 | |
| ITF W75 Brisbane WD | 02/04 01:30 | - | Koshiishi/Sato v Da Silva Fick/Kung | 2-6,4-6 | |
| ITF Women Kyoto WD | 09/07 08:00 | 26 | Kajitani/Nishimoto v Koshiishi/Sato | 6-2,6-1 |