Stadium: Court 4 Round: 26 Ground: Hardcourt outdoor
| ITF Korea F6 | 2018/08/30 03:00 | Kwon, OH-Hee v Oh, Seong-Gook | 4-6,1-6 |
| ITF Korea F4 | 2018/08/16 01:00 | Oh, Seong-Gook v Kwon, OH-Hee | 6-4,6-4 |
| ITF - M15 Anseong | 2019/06/26 01:00 | Kwon, OH-Hee v Lee, Young Seok | 6-2,6-2 |
| Gimcheon, Singles M-ITF-KOR-03A | 2019/06/20 02:50 | Kwon, OH-Hee v Kim, Cheong-Eui | 3-6,6-3,2-6 |
| Gimcheon, Singles M-ITF-KOR-03A | 2019/06/19 01:00 | Kwon, OH-Hee v Daisuke Sumizawa | 4-6,7-6,6-3 |
| Gimcheon, Singles M-ITF-KOR-03A | 2019/06/18 02:40 | Kwon, OH-Hee v van Meter, Joseph W | 6-2,6-3 |
| Gimcheon, Singles M-ITF-KOR-03A | 2019/06/17 03:45 | Kwon, OH-Hee v Lee, Woo Young | 6-0,6-1 |
| Akishima, Singles M-ITF-JPN-08A | 2019/06/12 01:00 | Kwon, OH-Hee v Ehara, Hiroyasu | 1-6,3-6 |
| Akishima, Singles M-ITF-JPN-08A | 2019/06/11 03:10 | Kwon, OH-Hee v Hirano, Taiyo | 6-2,6-2 |
| ITF - M15 Daegu | 2019/06/06 02:00 | Kim, Cheong-Eui v Kwon, OH-Hee | 4-6,6-3,6-0 |
| ITF - M15 Anseong | 2019/06/25 05:05 | Jung, Hyeon IL v Oh, Seong-Gook | 1-6,0-6 |
| Gimcheon, Singles M-ITF-KOR-03A | 2019/06/18 05:45 | Sanhui Shin v Oh, Seong-Gook | 6-1,6-4 |
| Gimcheon, Singles M-ITF-KOR-03A | 2019/06/13 01:30 | Oh, Seong-Gook v Park, Sung Jun | 6-1,5-7,4-6 |
| Gimcheon, Singles M-ITF-KOR-03A | 2019/06/12 03:20 | Oh, Seong-Gook v Seita Watanabe | 6-7,6-2,6-3 |
| ITF - M15 Daegu | 2019/06/08 04:30 | Oh, Seong-Gook v Hong, Seong Chan | 1-6,2-6 |
| ITF - M15 Daegu | 2019/06/08 01:00 | Oh, Seong-Gook v Kim, Young Seok | 6-2,6-2 |
| ITF - M15 Daegu | 2019/06/06 03:40 | Oh, Seong-Gook v Yeongseok Jeong | 6-1,6-2 |
| ITF - M15 Daegu | 2019/06/05 04:50 | Oh, Seong-Gook v Park, Sung Jun | 6-4,6-7,7-5 |