Stadium: Court 5 Round: 25 Ground: Hardcourt outdoor
| ITF W15 Yeongwol | 2019/08/27 02:00 | Hong, Seung-Yeon v Yun, Hyeran | 7-5,6-1 |
| ITF W15 Yeongwol | 2019/08/26 02:00 | Hong, Seung-Yeon v Park, Eunyeong | 6-0,6-1 |
| ITF W15 Yeongwol | 2019/08/25 04:00 | Hong, Seung-Yeon v Kang, Choyeon | 6-1,6-1 |
| Daegu, Singles W-ITF-KOR-04A | 2019/06/03 01:00 | Hong, Seung-Yeon v Yoshitomi, Aiko | 4-6,4-6 |
| ITF W25 Incheon | 2019/05/27 03:10 | Pei-Chi Lee v Hong, Seung-Yeon | 6-3,4-6,10-7 |
| ITF W25 Goyang | 2019/05/21 02:15 | Hong, Seung-Yeon v Yeon Woo Ku | 0-6,2-6 |
| ITF W25 Goyang | 2019/05/20 05:05 | Jeong, Sunam v Hong, Seung-Yeon | 6-2,3-6,2-10 |
| ITF Women Yeongwol | 2018/09/06 03:00 | Hong, Seung-Yeon v Jeong, Sunam | 4-6,3-6 |
| Guiyang, Singles W-ITF-CHN-17A | 2019/08/20 05:05 | Kim, Da Hye v Dabin Kim | 4-6,3-6 |
| Huangshan, Simples W-ITF-CHN-16A | 2019/08/14 02:00 | Fang Ying Xun v Kim, Da Hye | 6-2,6-2 |
| Hua Hin, Simples W-ITF-THA-10A | 2019/07/12 03:00 | Thamchaiwat, B. v Kim, Da Hye | 6-1,6-3 |
| Hua Hin, Simples W-ITF-THA-10A | 2019/07/10 04:45 | Kim, Da Hye v Ines Ibbou | 6-3,6-3 |
| Hua Hin, Simples W-ITF-THA-10A | 2019/07/06 02:00 | Brouleau, Lou v Kim, Da Hye | 6-7,7-5,6-4 |
| Hua Hin, Simples W-ITF-THA-10A | 2019/07/05 04:30 | Zeel Desai v Kim, Da Hye | 1-6,1-6 |
| Hua Hin, Simples W-ITF-THA-10A | 2019/07/04 03:40 | Kim, Da Hye v Punnin Kovapitukted | 6-3,6-2 |
| Hua Hin, Simples W-ITF-THA-10A | 2019/07/03 04:00 | Kim, Da Hye v Honoka Kobayashi | 6-3,6-4 |