Stadium: Indoor 2 Round: 54 Ground: Hardcourt outdoor
| ITF Women Gimcheon | 2017/06/05 02:00 | Yu Jin Ahn v Se Jin Lee | 1-6,4-6 |
| ITF W25 Goyang | 2019/05/20 07:20 | Freya Christie v Se Jin Lee | 6-4,6-3 |
| ITF Women Yeongwol | 2018/09/05 03:10 | Se Jin Lee v Seung-Yeon Hong | 3-6,3-6 |
| ITF Women Gimcheon | 2018/08/16 02:25 | Sakura Hosogi v Se Jin Lee | 2-6,4-6 |
| ITF Women Gimcheon | 2018/08/15 02:35 | Se Jin Lee v BoYoung Jeong | 6-2,6-1 |
| ITF Women Gimcheon | 2018/08/13 01:00 | Da Ye Kim v Se Jin Lee | 6-3,1-6,3-6 |
| ITF Women Gimcheon | 2018/08/12 01:00 | Se Jin Lee v Dami Lee | 6-1,6-3 |
| ITF Women Tianjin Qual | 2018/07/09 03:25 | Ya-Hsin Lee v Se Jin Lee | 3-6,6-3,6-4 |
| ITF Women Naiman | 2018/07/02 03:55 | Se Jin Lee v Na Ri Kim | 2-6,2-6 |
| 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 Women Gimcheon | 2018/08/22 01:00 | Alexandra Walters v Yu Jin Ahn | 4-6,4-6 |