Stadion: Court 1 Round: 27 Ground: Hardcourt outdoor
| ITF - Korea F6 | 2018/08/31 03:00 | Young Seok Kim v Seong-Gook Oh | 5-7,6-2,4-6 |
| ITF - M15 - Daegu | 2019/06/06 03:40 | Seong-Gook Oh v Yeongseok Jeong | 6-1,6-2 |
| ITF - M15 - Daegu | 2019/06/05 04:50 | Seong-Gook Oh v Sung Jun Park | 6-4,6-7,7-5 |
| ITF - Vietnam F5 | 2018/11/01 04:30 | Filip Bergevi v Seong-Gook Oh | 6-7,6-2,6-2 |
| ITF - Vietnam F5 | 2018/10/31 03:00 | Seong-Gook Oh v Grigoriy Lomakin | 6-3,2-6,6-4 |
| ITF - Vietnam F4 | 2018/10/23 03:40 | Rio Noguchi v Seong-Gook Oh | 6-3,6-2 |
| ITF - Korea F6 | 2018/09/01 04:00 | Seong-Gook Oh v Min-Kyu Song | 1-6,6-7 |
| ITF - Korea F6 | 2018/08/31 03:00 | Young Seok Kim v Seong-Gook Oh | 5-7,6-2,4-6 |
| ITF - Korea F6 | 2018/08/30 03:00 | Oh-Hee Kwon v Seong-Gook Oh | 4-6,1-6 |
| ITF - M15 - Daegu | 2019/06/06 04:45 | Taisei Ichikawa v Young Seok Kim | 3-6,6-3,5-7 |
| ITF - M15 - Daegu | 2019/06/05 05:00 | Young Seok Kim v Takuto Niki | 6-4,6-3 |
| ITF - M15 - Daegu | 2019/06/04 03:25 | Young Seok Kim v Kangjae Kim | 6-1,6-0 |
| ITF - M15 - Daegu | 2019/06/03 01:00 | Young Seok Kim v Jin Sung Han | 6-4,6-4 |
| Challenger - Busan | 2019/05/07 02:00 | Young Seok Kim v Luke Saville | 1-6,0-6 |
| ITF - Thailand F7 | 2018/10/30 07:05 | Young Seok Kim v Hiroyasu Ehara | 6-7,1-6 |
| ITF - Thailand F7 | 2018/10/29 02:00 | Mitchell Thomas McDaniels v Young Seok Kim | 6-7,4-6 |
| ITF - Thailand F7 | 2018/10/28 03:00 | Nawakarn Khunjan v Young Seok Kim | 4-6,3-6 |