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