Stadium: Court 8 Round: 25 Ground: Hardcourt outdoor
| ITF Women Incheon Qual | 2018/05/14 02:00 | Ya-Hsuan Lee v Yu Jin Ahn | 6-3,6-1 |
| ITF Women Yeongwol | 2017/09/07 03:10 | Ya-Hsuan Lee v Yu Jin Ahn | 6-2,6-2 |
| ITF W25 Incheon | 2019/05/28 01:00 | Kanako Morisaki v Yu Jin Ahn | 6-3,3-6,7-10 |
| ITF W25 Goyang | 2019/05/20 07:05 | Dayeon Back v Yu Jin Ahn | 6-4,6-0 |
| ITF Women Yeongwol | 2018/09/08 03:00 | Yu Jin Ahn v Sunam Jeong | 2-6,5-7 |
| ITF Women Yeongwol | 2018/09/07 02:40 | Eun Ji Lee v Yu Jin Ahn | 6-4,1-6,2-6 |
| ITF Women Yeongwol | 2018/09/06 02:45 | Yu Jin Ahn v Eunhye Lee | 6-1,2-6,6-4 |
| ITF Women Yeongwol | 2018/09/04 03:00 | Yu Jin Ahn v Yugyeong Oh | 6-4,6-1 |
| ITF Women Gimcheon | 2018/08/24 01:00 | Yu Jin Ahn v Emily Appleton | 1-6,1-6 |
| ITF Women Gimcheon | 2018/08/23 01:00 | Yu Jin Ahn v Dabin Oh | 6-1,6-1 |
| ITF W25 Goyang | 2019/05/22 01:00 | Daria Mishina v Ya-Hsuan Lee | 6-3,2-6,3-6 |
| ITF W25 Changwon | 2019/05/19 01:30 | Ya-Hsuan Lee v Chanel Simmonds | 3-6,5-7 |
| ITF W25 Changwon | 2019/05/18 03:00 | Ya-Hsuan Lee v Xiaodi You | 6-1,6-4 |
| ITF W25 Changwon | 2019/05/17 02:00 | Ya-Hsuan Lee v Hanna Chang | 6-2,6-0 |
| ITF W25 Changwon | 2019/05/16 01:00 | Ya-Hsuan Lee v So-Ra Lee | 6-2,6-2 |
| ITF W25 Changwon | 2019/05/15 01:00 | Ya-Hsuan Lee v Yeong Won Jeong | 6-0,6-2 |
| ITF W25 Osaka | 2019/04/09 05:00 | Ya-Hsuan Lee v Akiko Omae | 6-4,6-7,2-6 |
| ITF W25 Kashiwa | 2019/04/02 01:55 | Haruka Kaji v Ya-Hsuan Lee | 6-3,6-1 |