Estadio: Court 18 Round: 26 Ground: Hardcourt outdoor
| 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 W25 Changwon | 2019/05/13 01:00 | Ayumi Koshiishi v Si On Park | 6-0,6-1 |
| ITF W15 Gimcheon | 2019/06/12 01:00 | Shou Na Mu v Man Ying Maggie Ng | 6-3,6-3 |
| ITF W15 Gimcheon | 2019/06/11 03:40 | Shou Na Mu v Heejin Han | 6-1,6-2 |
| ITF W15 Nanchang | 2019/03/05 02:00 | Shou Na Mu v Natasha Palha | 6-2,7-6 |
| ITF W15 Nanchang | 2019/02/28 02:00 | Xu Liu Sun v Shou Na Mu | 6-3,6-3 |
| ITF W15 Nanchang | 2019/02/27 03:45 | Shou Na Mu v Mei Yamaguchi | 6-4,6-1 |
| ITF W15 Nanchang | 2019/02/26 02:00 | Shou Na Mu v Eun Se Jang | 6-2,7-5 |
| ITF W15 Nanchang | 2019/02/25 05:00 | Shou Na Mu v Ai Qi Chen | 7-6,6-2 |
| ITF W15 Monastir | 2019/01/31 09:35 | Shou Na Mu v Miriam Bulgaru | 2-6,6-3,0-6 |