Stadium: Court 16 Round: 54 Ground: Hardcourt outdoor
| ITF Korea F3 Qual | 2018/06/16 02:00 | Jaeheon Yoon v Dylan Seong Kwan Kim | 6-4,6-4 |
| ITF Korea F3 Qual | 2018/06/17 03:00 | Ilsang Yoon v Jaeheon Yoon | 7-5,6-2 |
| ITF Korea F3 Qual | 2018/06/16 02:00 | Jaeheon Yoon v Dylan Seong Kwan Kim | 6-4,6-4 |
| ITF Korea F2 | 2018/06/10 01:00 | Jaeheon Yoon v Sang Yeop Kim | 1-6,1-6 |
| ITF Korea F2 | 2018/06/09 01:00 | Jaeheon Yoon v Seungri Choi | 6-1,7-5 |
| ITF Korea F1 | 2018/06/03 02:00 | Byeonghun Kim v Jaeheon Yoon | 6-1,6-2 |
| ITF Korea F4 | 2017/06/17 04:00 | Jun Sang Park v Jaeheon Yoon | 6-0,6-2 |
| ITF Korea F3 Qual | 2017/06/11 03:00 | Jaeheon Yoon v Hyeong Jin Cho | 2-6,1-6 |
| ITF Korea F2 Qual | 2017/06/03 03:00 | Tae-Woo Lee v Jaeheon Yoon | 7-6,6-2 |
| ITF M15 Daegu | 2019/06/03 04:10 | Woo Young Lee v Dylan Seong Kwan Kim | 6-3,6-1 |
| ITF Thailand F8 | 2018/11/03 04:30 | Tonkla Mulada v Dylan Seong Kwan Kim | 6-1,6-2 |
| ITF Thailand F7 | 2018/10/28 03:00 | Dylan Seong Kwan Kim v Alexander Donski | 5-7,3-6 |
| ITF Korea F6 | 2018/08/30 05:50 | Lucas Catarina v Dylan Seong Kwan Kim | 6-2,6-4 |
| ITF Korea F6 | 2018/08/27 02:00 | Sung Hun Kim v Dylan Seong Kwan Kim | 4-6,6-7 |
| ITF Korea F6 | 2018/08/25 01:00 | Dylan Seong Kwan Kim v Yu-Seob Kim | 6-4,6-3 |
| ITF Korea F3 Qual | 2018/06/16 02:00 | Jaeheon Yoon v Dylan Seong Kwan Kim | 6-4,6-4 |
| ITF Korea F2 | 2018/06/10 02:00 | Sung Jun Park v Dylan Seong Kwan Kim | 7-6,6-1 |