Stadium: Court 6 Round: 25 Ground: Hardcourt outdoor
| ITF M25 Nonthaburi | 2019/07/23 05:25 | Seong-Gook Oh v Vladyslav Orlov | 6-7,3-6 |
| ITF M15 Anseong | 2019/06/28 02:45 | Thomas Fancutt v Seong-Gook Oh | 7-6,7-6 |
| ITF M15 Anseong | 2019/06/27 01:00 | Oh-Hee Kwon v Seong-Gook Oh | 2-6,2-6 |
| ITF M15 Anseong | 2019/06/25 05:05 | Hyeon il Jung v Seong-Gook Oh | 1-6,0-6 |
| ITF M15 Gimcheon | 2019/06/18 05:45 | Sanhui Shin v Seong-Gook Oh | 6-1,6-4 |
| ITF M15 Gimcheon | 2019/06/13 01:30 | Seong-Gook Oh v Sung Jun Park | 6-1,5-7,4-6 |
| ITF M15 Gimcheon | 2019/06/12 03:20 | Seong-Gook Oh v Seita Watanabe | 6-7,6-2,6-3 |
| ITF M15 Daegu | 2019/06/08 04:30 | Seong-Gook Oh v Seong Chan Hong | 1-6,2-6 |
| ITF M15 Anseong | 2019/06/28 03:00 | Jung-Woong Na v Cheong-Eui Kim | 2-6,2-6 |
| ITF M15 Anseong | 2019/06/27 01:00 | Jung-Woong Na v Tae-Woo Lee | 6-3,6-3 |
| ITF M15 Anseong | 2019/06/26 01:00 | Jung-Woong Na v Seungri Choi | 6-1,6-1 |
| ITF M15 Gimcheon | 2019/06/19 01:00 | Seong Taek Im v Jung-Woong Na | 0-6,0-6 |
| ITF M15 Gimcheon | 2019/06/13 02:30 | Jean Thirouin v Jung-Woong Na | 6-2,6-3 |
| ITF M15 Gimcheon | 2019/06/12 04:05 | Jung-Woong Na v Cheong-Eui Kim | 6-2,6-2 |
| ITF M15 Daegu | 2019/06/09 03:25 | Jung-Woong Na v Seong Chan Hong | 0-6,3-6 |
| ITF M15 Daegu | 2019/06/08 05:30 | Cheong-Eui Kim v Jung-Woong Na | 2-6,1-6 |