Stadium: Covered Court 1 Round: 54 Ground: Hardcourt outdoor
| 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 - W25 Changwon | 2019/05/13 01:00 | Ayumi Koshiishi v Si On Park | 6-0,6-1 |
| ITF W60 - Fukuoka | 2019/05/06 01:00 | Mai Hontama v Ayumi Koshiishi | 3-6,6-3,10-2 |
| ITF W25 Hong Kong | 2019/04/08 02:00 | Ayumi Koshiishi v Mihika Yadav | 6-3,2-6,4-10 |
| ITF W25 - Jackson | 2019/04/03 16:40 | Ayumi Koshiishi v Ann Li | 1-6,2-6 |
| ITF W25 - Jackson | 2019/04/02 15:00 | Ayumi Koshiishi v Alesya Yakubovich | 6-3,6-2 |
| ITF W25 - Luzhou | 2019/05/27 05:55 | Qian Yang v WanNing Zhu | 6-3,2-6,5-10 |
| ITF W25 Wuhan | 2019/05/13 02:30 | Si Qi Liu v WanNing Zhu | 4-6,6-0,10-6 |
| ITF W60 Luan | 2019/05/07 05:50 | WanNing Zhu v Yue Yuan | 5-7,2-6 |
| ITF W15 Xiamen | 2019/03/19 02:00 | Zhibek Kulambayeva v WanNing Zhu | 6-3,6-1 |
| ITF W15 Xiamen | 2019/03/18 02:30 | Xinlei Guan v WanNing Zhu | 6-2,3-6,2-10 |
| ITF W60 Shenzhen | 2019/03/11 04:00 | Kyoka Okamura v WanNing Zhu | 6-0,6-0 |
| ITF W15 Nanchang | 2019/03/06 04:00 | Nika Kukharchuk v WanNing Zhu | 6-1,6-0 |
| ITF W15 Nanchang | 2019/02/25 05:05 | WanNing Zhu v Eun Se Jang | 5-7,3-6 |