Stadium: Court 5 Round: 28 Ground: Hardcourt outdoor
| ITF W15 Yeongwol | 2019/09/07 05:30 | Dayeon Back v Yu Jin Ahn | 6-1,6-3 |
| ITF W25 Goyang | 2019/05/20 07:05 | Dayeon Back v Yu Jin Ahn | 6-4,6-0 |
| ITF W25 Incheon | 2022/06/08 01:55 | Dayeon Back v Na Ri Kim | 3-6,3-6 |
| ITF W25 Changwon | 2022/06/03 02:15 | Dayeon Back v Kurumi Nara | 3-6,2-6 |
| ITF W25 Changwon | 2022/06/02 02:50 | Eunchae Kim v Dayeon Back | 4-6,6-7 |
| ITF W25 Changwon | 2022/06/01 02:30 | Sumin Kim v Dayeon Back | 1-6,0-6 |
| ITF W15 Sharm El Sheikh | 2022/03/24 08:00 | Dayeon Back v Anna Brogan | 0-6,2-6 |
| ITF W15 Sharm El Sheikh | 2022/03/23 09:15 | Yexin Ma v Dayeon Back | 7-6,2-6,5-7 |
| ITF W15 Sharm El Sheikh | 2022/03/15 10:15 | Kristina Dmitruk v Dayeon Back | 6-7,6-2,10-3 |
| ITF W15 Sharm El Sheikh | 2022/03/14 11:30 | Nino Natsvlishvili v Dayeon Back | 2-6,1-6 |
| ITF W25 Incheon | 2022/06/07 03:25 | Yu Jin Ahn v Nana Kawagishi | 3-6,5-7 |
| ITF W25 Incheon | 2022/06/06 06:05 | Yu Jin Ahn v Gio Jang | 6-1,6-3 |
| ITF W25 Incheon | 2022/06/05 03:50 | Cherry Kim v Yu Jin Ahn | 2-6,4-6 |
| ITF W25 Changwon | 2022/05/29 01:00 | Gyeong Seo Lee v Yu Jin Ahn | 5-7,7-5,14-12 |
| WTA Seoul | 2019/09/14 04:35 | Priscilla Hon v Yu Jin Ahn | 6-3,6-1 |
| ITF W15 Yeongwol | 2019/09/07 05:30 | Dayeon Back v Yu Jin Ahn | 6-1,6-3 |
| ITF W15 Yeongwol | 2019/09/06 01:00 | Yu Jin Ahn v Seung-Yeon Hong | 7-6,6-1 |
| ITF W15 Yeongwol | 2019/09/05 03:15 | Hwiwon Wi v Yu Jin Ahn | 3-6,5-7 |