Stadium: Court 1 Round: 28 Ground: Hardcourt outdoor
| ITF W15 Yeongwol | 2022/09/01 00:50 | Dayeon Back v Jeong, Sunam | 2-6,0-6 |
| Gimcheon, Singles Qualifying W-ITF-KOR-05A | 2019/06/19 02:45 | Jeong, Sunam v Dayeon Back | 7-6,6-4 |
| ITF W15 Yeongwol | 2023/09/07 05:00 | Dayeon Back v Kim, Cherry | 6-2,6-4 |
| ITF W15 Yeongwol | 2023/09/06 04:05 | Dayeon Back v Onyu Choi | 6-0,6-1 |
| ITF W15 Yeongwol | 2023/09/03 01:00 | Dayeon Back v Dasha Ivanova | 6-3,6-0 |
| ITF W15 Yeongwol | 2023/09/02 03:00 | Dayeon Back v BoYoung Jeong | 6-1,6-3 |
| ITF W15 Yeongwol | 2023/09/01 03:55 | Dayeon Back v Kim, Cherry | 6-0,6-1 |
| ITF W15 Yeongwol | 2023/08/31 03:55 | Dayeon Back v Haram Kim | 6-3,6-0 |
| ITF W15 Yeongwol | 2023/08/30 06:15 | Dayeon Back v Park, Ryeong Gyeong | 6-0,6-0 |
| ITF W15 Sapporo | 2023/08/13 01:00 | Miho Kuramochi v Dayeon Back | 2-6,0-6 |
| ITF W15 Yeongwol | 2023/09/08 02:00 | Jeong, Sunam v Eunhye Lee | 4-6,6-4,6-4 |
| ITF W15 Yeongwol | 2023/09/07 01:00 | Ho Ching Wu v Jeong, Sunam | 1-6,1-6 |
| ITF W15 Yeongwol | 2023/09/05 05:25 | Rinon Okuwaki v Jeong, Sunam | 2-6,1-6 |
| ITF W15 Yeongwol | 2023/08/31 05:25 | Kim, Cherry v Jeong, Sunam | 6-4,6-4 |
| ITF W15 Yeongwol | 2023/08/29 00:55 | Jeong, Sunam v Nana Kawagishi | 3-6,6-3,6-4 |
| Daegu, Singles W-ITF-KOR-04A | 2023/06/06 03:15 | Jeong, Sunam v Fangzhou Liu | 6-7,6-2,5-7 |
| ITF W25 Changwon | 2023/06/02 03:30 | Ya-Hsuan Lee v Jeong, Sunam | 6-4,6-3 |
| ITF W25 Changwon | 2023/05/31 02:55 | Jeong, Sunam v Kim, Da Hye | 6-2,6-3 |