Stadium: Court 12 Round: 25
| ITF Korea F1 | 2018/06/05 01:00 | Seong-Gook Oh v Jae-Won Choi | 1-6,5-7 |
| Challenger Busan Qual | 2018/05/12 02:15 | Jeamoon Lee v Seong-Gook Oh | 7-6,6-3 |
| Challenger Seoul Qual | 2018/04/28 02:50 | Ji Hoon Son v Seong-Gook Oh | 6-3,6-3 |
| ITF China F1 | 2018/01/11 02:30 | Seong-Gook Oh v Shinji Hazawa | 3-6,4-6 |
| ITF China F1 | 2018/01/08 03:05 | Seong-Gook Oh v Yuanfeng Li | 7-6,6-2 |
| Challenger Toyota Qual | 2017/11/11 00:30 | Seong-Gook Oh v Yuya Kibi | 3-6,1-6 |
| ITF India F8 | 2017/09/15 04:30 | Seong-Gook Oh v Colin Van Beem | 6-7,6-1,4-6 |
| ITF India F8 | 2017/09/14 05:00 | Seong-Gook Oh v Clement Larriere | 6-0,1-6,6-4 |
| Challenger Seoul Qual | 2018/04/29 02:00 | Luke Saville v Sanhui Shin | 6-1,6-1 |
| Challenger Seoul Qual | 2018/04/28 01:30 | Sanhui Shin v Dong Ju Kim | 6-4,6-4 |
| ITF Thailand F4 | 2016/12/11 06:10 | Sanhui Shin v Andrei Levine | 7-6,6-3 |
| ITF Thailand F4 | 2016/12/10 09:00 | Sanhui Shin v Thantub Suksumrarn | 6-2,6-2 |
| ITF Korea F8 | 2016/09/07 03:50 | Sanhui Shin v Dylan Seong Kwan Kim | 2-6,4-6 |
| ITF Korea F8 | 2016/09/06 04:15 | Sanhui Shin v Ryota Kishi | 6-3,6-2 |
| ITF Korea F8 | 2016/09/05 01:30 | Sanhui Shin v Jinseok Yu | 7-5,6-3 |
| ITF Korea F8 | 2016/09/04 02:00 | Sanhui Shin v Hangyeom Kim | 6-2,6-1 |