Stadium: Court 4 Round: 26 Ground: Hardcourt outdoor
| ITF Korea F6 | 2018/08/30 03:00 | Oh-Hee Kwon v Seong-Gook Oh | 4-6,1-6 |
| ITF Korea F4 | 2018/08/16 01:00 | Seong-Gook Oh v Oh-Hee Kwon | 6-4,6-4 |
| ITF M15 Anseong | 2019/06/26 01:00 | Oh-Hee Kwon v Young Seok Lee | 6-2,6-2 |
| ITF M15 Gimcheon | 2019/06/20 02:50 | Oh-Hee Kwon v Cheong-Eui Kim | 3-6,6-3,2-6 |
| ITF M15 Gimcheon | 2019/06/19 01:00 | Oh-Hee Kwon v Daisuke Sumizawa | 4-6,7-6,6-3 |
| ITF M15 Gimcheon | 2019/06/18 02:40 | Oh-Hee Kwon v Joseph W. Van Meter | 6-2,6-3 |
| ITF M15 Gimcheon | 2019/06/17 03:45 | Oh-Hee Kwon v Woo Young Lee | 6-0,6-1 |
| ITF M15 Akishima | 2019/06/12 01:00 | Oh-Hee Kwon v Hiroyasu Ehara | 1-6,3-6 |
| ITF M15 Akishima | 2019/06/11 03:10 | Oh-Hee Kwon v Taiyo Hirano | 6-2,6-2 |
| ITF M15 Daegu | 2019/06/06 02:00 | Cheong-Eui Kim v Oh-Hee Kwon | 4-6,6-3,6-0 |
| 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 Daegu | 2019/06/08 01:00 | Seong-Gook Oh v Young Seok Kim | 6-2,6-2 |
| 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 |