Round: 44 Ground: Hardcourt outdoor
| ITF Corea F1 - Clasificación | 2017/05/28 06:30 | Seong-Gook Oh v Woo-Ram Kim | 6-1,6-4 |
| Challenger de Busan - Clasificación | 2017/05/14 03:50 | Takuto Niki v Seong-Gook Oh | 6-4,6-3 |
| Challenger de Busan - Clasificación | 2017/05/13 05:50 | Yunseong Chung v Seong-Gook Oh | 6-4,6-7,3-6 |
| ITF Korea F8 | 2016/09/03 01:00 | Seon Yong Han v Seong-Gook Oh | 6-4,6-1 |
| ITF Japón F7 - Clasificación | 2016/06/04 01:00 | Yuga Tashiro v Seong-Gook Oh | 6-2,6-2 |
| ITF Guam F1 | 2016/05/25 01:35 | Seong-Gook Oh v Sho Katayama | 4-6,1-6 |
| ITF Guam F1 | 2016/05/23 02:25 | Seong-Gook Oh v Ren Nakamura | 6-4,6-4 |
| ITF Guam F1 | 2016/05/22 00:00 | Seong-Gook Oh v Kennosuke Nouchi | 6-4,6-1 |
| ITF Corea F1 - Clasificación | 2017/05/28 06:30 | Woo Hyeok Jang v Hyung-Chan Lim | 6-2,6-3 |
| ITF Korea F8 | 2016/08/29 01:30 | Woo Hyeok Jang v Jeamoon Lee | 6-7,5-7 |
| ITF Korea F8 | 2016/08/28 02:00 | Keisuke Numajiri v Woo Hyeok Jang | 3-6,1-6 |
| ITF Korea F8 | 2016/08/27 02:00 | Woo Hyeok Jang v Woo-Ram Kim | 6-2,6-3 |
| ITF Korea F8 | 2016/08/21 04:30 | Sanhui Shin v Woo Hyeok Jang | 7-5,6-3 |
| ITF Corea F1 - Clasificación | 2016/06/11 01:00 | Dylan Seong Kwan Kim v Woo Hyeok Jang | 6-3,6-3 |