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 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 Jeongha 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 Women Gimcheon | 2018/08/22 01:00 | Alexandra Walters v Yu Jin Ahn | 4-6,4-6 |
| ITF Women Gimcheon | 2018/08/19 01:00 | Emily Appleton v Yu Jin Ahn | 6-4,3-6,6-2 |
| 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 |
| ITF W25 Kofu | 2019/03/25 01:30 | Ya-Hsuan Lee v Emina Bektas | 4-6,4-6 |
| ITF W25 Kofu | 2019/03/25 00:30 | Ya-Hsuan Lee v Sae Haraguchi | 6-2,6-0 |
| ITF W25 Kofu | 2019/03/18 04:30 | Ya-Hsuan Lee v Stephanie Wagner | 1-6,0-6 |
| ITF W25 Kofu | 2019/03/18 00:30 | Ya-Hsuan Lee v Catherine Harrison | 6-3,4-6,14-12 |
| ITF W60 Kyoto | 2019/02/20 02:00 | Ya-Hsuan Lee v Akiko Omae | 6-7,6-7 |
| ITF W25 Singapore | 2019/01/21 03:00 | Ya-Hsuan Lee v Eudice Chong | 0-6,5-7 |