Round: 62 Ground: Hardcourt outdoor
| ITF Korea F2 | 2018/06/10 03:30 | Seong Woon Yu v Alec Adamson | 5-7,3-6 |
| ITF Korea F2 | 2018/06/09 02:00 | Seong Woon Yu v Jun Su Kim | 6-2,6-0 |
| ITF Korea F1 | 2018/06/03 01:00 | Tae-Woo Lee v Seong Woon Yu | 6-1,2-6,6-1 |
| ITF Korea F1 | 2018/06/02 01:00 | Jeong Heon Lee v Seong Woon Yu | 6-1,3-6,2-6 |
| ITF Korea F8 | 2016/08/21 02:00 | Woo-Ram Kim v Seong Woon Yu | 6-0,6-2 |
| ITF Korea F8 | 2016/08/20 03:30 | Sung Jun Park v Seong Woon Yu | 6-4,2-6,3-6 |
| ITF Korea F1 Qual | 2016/06/12 03:00 | Dong-Hak Sin v Seong Woon Yu | 6-3,6-2 |
| Challenger Gwangju Qual | 2017/09/17 01:30 | Lorenzo Frigerio v Dae-Hee Lee | 6-1,6-3 |
| Challenger Gwangju Qual | 2017/09/16 01:30 | Seoung Hun Lee v Dae-Hee Lee | 4-6,3-6 |
| ITF Korea F5 | 2017/06/26 01:30 | Dae-Hee Lee v Jeong Heon Lee | 4-6,6-2,4-6 |
| ITF Korea F4 | 2017/06/18 01:00 | Dae-Hee Lee v Sang Yeop Kim | 3-6,4-6 |
| ITF Korea F3 | 2017/06/15 01:00 | Dae-Hee Lee v Hong Chung | 1-6,0-6 |
| ITF Korea F3 | 2017/06/13 03:30 | Jaeyoung Park v Dae-Hee Lee | 4-6,2-6 |
| ITF Korea F2 | 2017/06/08 03:00 | Daniel Nguyen v Dae-Hee Lee | 6-2,6-0 |
| ITF Korea F2 | 2017/06/07 03:35 | Ku Keon Kang v Dae-Hee Lee | 3-6,6-1,3-6 |