Round: 54 Ground: Hardcourt outdoor
| ITF Korea F5 | 2018/08/18 01:00 | Ki Su Jung v Jeong Heon Lee | 6-3,6-1 |
| ITF Korea F4 | 2018/08/14 04:40 | Jeong Heon Lee v Mark Whitehouse | 0-6,0-6 |
| ITF Korea F4 | 2018/08/13 01:00 | Cheong Hwi Kim v Jeong Heon Lee | 3-6,6-3,3-6 |
| ITF Korea F4 | 2018/08/12 02:00 | Jeong Heon Lee v Worarin Kumthonkittikul | 6-2,6-3 |
| ITF Korea F4 | 2018/08/11 01:00 | Jeong Heon Lee v Hyun Bin Jin | 6-1,6-2 |
| ITF Korea F2 | 2018/06/10 06:30 | Chukang Wang v Jeong Heon Lee | 2-6,6-3,6-0 |
| ITF Korea F2 | 2018/06/09 02:00 | Jeong Heon Lee v Young Min Joo | 6-4,6-1 |
| ITF Korea F1 | 2018/06/02 01:00 | Jeong Heon Lee v Seong Woon Yu | 6-1,3-6,2-6 |
| ITF M15 Daegu | 2019/06/03 01:00 | Kangjae Kim v Seong Jae Han | 6-3,6-2 |
| ITF Korea F6 | 2018/08/30 04:05 | Jung-Woong Na v Seong Jae Han | 6-3,6-1 |
| ITF Korea F6 | 2018/08/28 03:50 | Seong Jae Han v Eun Chong Shin | 6-4,6-4 |
| ITF Korea F5 | 2018/08/21 01:00 | Ji Sung Nam v Seong Jae Han | 6-1,6-0 |
| ITF Korea F5 | 2018/08/20 01:00 | Seong Jae Han v Seong Taek Im | 2-6,2-6 |
| ITF Korea F5 | 2018/08/19 02:00 | Jin Sung Han v Seong Jae Han | 4-6,5-7 |
| ITF Korea F5 | 2018/08/18 03:00 | Seon Yong Han v Seong Jae Han | 4-6,3-6 |
| ITF Korea F4 | 2018/08/12 02:00 | Seong Taek Im v Seong Jae Han | 7-5,6-2 |