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 Singapore | 2019/01/21 03:00 | Ya-Hsuan Lee v Eudice Chong | 0-6,5-7 |
| ITF W25 Singapore | 2019/01/16 03:45 | Kurumi Nara v Ya-Hsuan Lee | 7-5,6-4 |
| ITF W25 Singapore | 2019/01/15 02:00 | Ya-Hsuan Lee v Peangtarn Plipuech | 6-2,6-1 |
| ITF W25 Singapore | 2019/01/14 03:00 | Ya-Hsuan Lee v Ana Veselinovic | 6-3,6-3 |
| ITF Women Pune | 2018/11/27 04:30 | Tamara Zidansek v Ya-Hsuan Lee | 6-3,6-3 |
| WTA Taipei | 2018/11/12 03:45 | Ya-Hsuan Lee v Tereza Martincova | 3-6,0-6 |
| WTA Taipei | 2018/11/11 06:10 | Ayano Shimizu v Ya-Hsuan Lee | 4-6,4-6 |
| ITF Women Liuzhou | 2018/10/30 05:10 | Ya-Hsuan Lee v Anhelina Kalinina | 6-4,3-6,3-6 |