Stadium: Court 13 Round: 54 Ground: Hardcourt outdoor
| ITF W15 Gimcheon | 2019/06/10 01:00 | Ashmitha Easwaramurthi v Seon Young Um | 2-6,0-6 |
| ITF W25 Incheon | 2019/05/27 01:00 | Seon Young Um v Da Ye Kim | 2-6,2-6 |
| ITF W25 Changwon | 2019/05/13 04:05 | Seon Young Um v Eun Ji Lee | 3-6,1-6 |
| ITF Women Yeongwol | 2018/09/03 02:00 | Seon Young Um v Mijeong Park | 3-6,4-6 |
| ITF Women Yeongwol | 2018/08/29 06:25 | Angelina Gabueva v Seon Young Um | 6-2,6-1 |
| ITF Women Yeongwol | 2018/08/28 02:00 | Seon Young Um v Seunghyun Lee | 6-4,7-6 |
| ITF Women Yeongwol | 2018/08/27 02:00 | Yubean Lee v Seon Young Um | 1-6,1-6 |
| ITF Women Gimcheon | 2018/08/20 01:00 | Sakura Hosogi v Seon Young Um | 6-2,6-4 |
| ITF W15 Gimcheon | 2019/06/10 01:00 | Jeongyun Lee v Suzuho Oshino | 6-3,3-6,10-7 |
| ITF Women Yeongwol | 2018/09/05 01:00 | Jeongyun Lee v Hwiwon Wi | 5-7,5-7 |
| ITF Women Yeongwol | 2018/08/29 03:35 | Yuka Hosoki v Jeongyun Lee | 2-6,6-7 |
| ITF Women Gimcheon | 2018/08/21 01:00 | Dabin Oh v Jeongyun Lee | 6-4,6-3 |
| ITF Women Gimcheon | 2018/08/20 01:00 | Jeongyun Lee v Seo Yeon Park | 6-2,6-2 |
| ITF Women Daegu Qual | 2018/06/17 01:00 | Hyojung Yea v Jeongyun Lee | 6-2,6-1 |
| ITF Women Gyeongsan Qual | 2018/06/10 03:30 | Satsuki Koike v Jeongyun Lee | 7-6,6-1 |
| ITF Women Goyang Qual | 2018/05/07 00:30 | Mi Jeong Kwon v Jeongyun Lee | 4-6,0-6 |