| ITF W15 Yeongwol | 09/07 02:55 | 25 | Seojin Oh v Junri Namigata | 3-6,6-7 | |
| ITF W15 Yeongwol | 09/06 04:45 | 62 | Seojin Oh v Dainhee Kim | 6-3,6-1 | |
| ITF W15 Yeongwol Qual | 09/05 08:15 | 62 | Seojin Oh v Ha Yoon Son | 6-3,6-4 | |
| ITF W15 Yeongwol Qual | 09/04 05:50 | 62 | Mi Jeong Kwon v Seojin Oh | 6-4,3-6,4-10 | |
| ITF W25 Incheon | 06/06 04:15 | 62 | Seojin Oh v Eunchae Kim | 1-6,2-6 | |
| ITF W25 Incheon | 06/05 03:00 | 62 | Seo Hyeon Jang v Seojin Oh | 4-6,6-1,7-10 | |
| ITF W25 Changwon | 05/29 05:00 | 62 | Na Hyun Kang v Seojin Oh | 6-4,6-1 |