Stadium: Court 1 Round: 25 Ground: Hardcourt outdoor
| ITF M15 Gimcheon | 2019/06/10 03:20 | Jungwon Park v Hyeon il Jung | 7-6,6-3 |
| ITF M15 Daegu | 2019/06/03 07:00 | Seong Taek Im v Hyeon il Jung | 6-2,6-1 |
| ITF Korea F6 | 2018/08/26 02:00 | Jung Hoon Kim v Hyeon il Jung | 6-7,4-6 |
| ITF Korea F5 | 2018/08/18 01:00 | Hyeon il Jung v Geun Jun Kim | 7-6,1-6,4-6 |
| ITF Korea F4 | 2018/08/11 01:00 | Ki Su Jung v Hyeon il Jung | 6-3,6-4 |
| ITF Korea F3 Qual | 2018/06/18 05:00 | Ju-Hae Moon v Hyeon il Jung | 6-2,6-1 |
| ITF Korea F3 Qual | 2018/06/16 02:00 | Jun Su Kim v Hyeon il Jung | 3-6,3-6 |
| ITF Korea F2 | 2018/06/11 09:35 | Sang-Woo Noh v Hyeon il Jung | 6-4,6-3 |
| 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 |
| ITF Vietnam F5 | 2018/11/01 04:30 | Filip Bergevi v Seong-Gook Oh | 6-7,6-2,6-2 |