Stadium: A12 Round: 26 Ground: Synthetic outdoor
| Nonthaburi, Doubles W-ITF-THA-04A | 2019/07/30 08:45 | Parnaby A / Yang Y v Koshiishi A / Sakatsume H | 7-5,7-5 |
| Daegu, Doubles W-ITF-KOR-04A | 2019/06/04 07:00 | Choi J-H / Han N-L v Koshiishi A / Sakatsume H | 7-6,6-1 |
| Xiamen, Doubles W-ITF-CHN-05A | 2019/03/19 08:20 | Koshiishi A / Sakatsume H v Guo S / Lu J | 3-6,0-6 |