Stadium: Court 11 Round: 27 Ground: Hardcourt outdoor
| ITF W15 Gimcheon | 2019/06/13 01:30 | Ayumi Koshiishi v Shou Na Mu | 7-5,6-3 |
| ITF W15 Gimcheon | 2019/06/12 01:00 | Ayumi Koshiishi v Dayeon Back | 7-5,6-2 |
| ITF W25 Daegu | 2019/06/04 01:00 | Ayumi Koshiishi v So-Ra Lee | 7-5,6-2 |
| ITF W25 Luzhou | 2019/05/28 06:15 | Ayumi Koshiishi v Jessica Ho | 3-6,1-6 |
| ITF W25 Luzhou | 2019/05/28 02:00 | Ayumi Koshiishi v WanNing Zhu | 6-0,6-1 |
| ITF W25 Goyang | 2019/05/21 01:00 | Chang Liu v Ayumi Koshiishi | 6-3,4-6,10-8 |
| ITF W25 Goyang | 2019/05/20 01:00 | Hyeran Yun v Ayumi Koshiishi | 4-6,3-6 |
| ITF W25 Changwon | 2019/05/14 01:00 | Ayumi Koshiishi v Dabin Oh | 6-3,3-6,5-10 |
| ITF W15 Gimcheon | 2019/06/13 01:30 | Misaki Matsuda v Kanako Morisaki | 6-1,6-2 |
| ITF W15 Gimcheon | 2019/06/11 04:25 | Zhuoma Ni Ma v Misaki Matsuda | 1-6,1-6 |
| ITF W25 Shenzhen | 2019/06/03 08:20 | Misaki Matsuda v Shuo Feng | 1-6,6-3,7-10 |
| ITF W25 Hong Kong | 2019/05/31 03:00 | Misaki Matsuda v Catherine Harrison | 4-6,1-6 |
| ITF W25 Hong Kong | 2019/05/30 02:00 | Aldila Sutjiadi v Misaki Matsuda | 6-2,1-6,5-7 |
| ITF W25 Hong Kong | 2019/05/28 09:30 | Misaki Matsuda v Ashmitha Easwaramurthi | 6-4,6-3 |
| ITF W25 Karuizawa | 2019/05/21 04:00 | Himeno Sakatsume v Misaki Matsuda | 4-6,6-4,14-12 |
| ITF W25 Karuizawa | 2019/05/20 01:00 | Ikumi Yamazaki v Misaki Matsuda | 4-6,3-6 |