Stadium: Court 7 Round: 25
| ITF Korea F1 | 2018/06/05 01:00 | Oh, Seong-Gook v Choi, Jae-Won | 1-6,5-7 |
| Challenger Busan Qual | 2018/05/12 02:15 | Jeamoon Lee v Oh, Seong-Gook | 7-6,6-3 |
| Challenger Seoul Qual | 2018/04/28 02:50 | Son, Ji Hoon v Oh, Seong-Gook | 6-3,6-3 |
| ITF China F1 | 2018/01/11 02:30 | Oh, Seong-Gook v Shinji Hazawa | 3-6,4-6 |
| ITF China F1 | 2018/01/08 03:05 | Oh, Seong-Gook v Li, Yuanfeng | 7-6,6-2 |
| Challenger Toyota Qual | 2017/11/11 00:30 | Oh, Seong-Gook v Kibi, Yuya | 3-6,1-6 |
| ITF India F8 | 2017/09/15 04:30 | Oh, Seong-Gook v van Beem, Colin | 6-7,6-1,4-6 |
| ITF India F8 | 2017/09/14 05:00 | Oh, Seong-Gook v Larriere, Clement | 6-0,1-6,6-4 |
| ITF Korea F2 | 2018/06/11 05:00 | Wang, Chukang v Han, Jin Sung | 7-6,6-2 |
| ITF Korea F2 | 2018/06/10 06:30 | Wang, Chukang v Jeong Heon Lee | 2-6,6-3,6-0 |
| ITF China F8 | 2018/06/05 05:00 | Bang Shuo Yin v Wang, Chukang | 6-3,3-6,6-3 |
| ITF China F7 | 2018/05/29 02:00 | Wang, Chukang v Takeuchi, Kento (1987) | 3-6,2-6 |
| ITF China F6 | 2018/05/15 02:00 | Shintaro Imai v Wang, Chukang | 6-3,6-2 |
| ITF China F6 Qual | 2018/05/14 03:00 | Wang, Chukang v Zijiang Yang | 7-5,6-2 |
| ITF China F6 Qual | 2018/05/13 03:00 | Wang, Chukang v Zhao Zhao | 6-3,6-1 |
| ITF China F5 | 2018/05/10 04:35 | Lo, Chien Hsun v Wang, Chukang | 7-5,6-4 |