Stadium: Court 2 Round: 27 Ground: Hardcourt outdoor
| ITF Korea F1 | 2018/06/07 01:00 | Jae Hwan Kim v Jeamoon Lee | 6-4,2-6,4-6 |
| ITF Korea F1 | 2018/06/05 03:25 | Jeamoon Lee v Han, Seong Jae | 6-1,6-0 |
| Challenger Busan Qual | 2018/05/13 02:00 | Yosuke Watanuki v Jeamoon Lee | 6-4,6-4 |
| Challenger Busan Qual | 2018/05/12 02:15 | Jeamoon Lee v Oh, Seong-Gook | 7-6,6-3 |
| Coupe Davis | 2017/09/17 04:05 | Jeamoon Lee v Tung-Lin Wu | 2-6,7-5,4-6 |
| ITF Korea F4 | 2017/06/23 02:00 | Jeamoon Lee v Kim, Young Seok | 6-3,6-7,3-6 |
| ITF Korea F4 | 2017/06/21 04:30 | Noh, Sang-Woo v Jeamoon Lee | 2-6,5-7 |
| ITF Korea F4 | 2017/06/20 02:30 | Jeamoon Lee v Choi, Jae-Won | 6-1,6-3 |
| ITF Korea F1 | 2018/06/07 04:00 | Cho, Hyeong Jin v Jeong, Young-Hoon | 0-6,1-6 |
| ITF Korea F1 | 2018/06/06 01:00 | Jeong, Young-Hoon v Hong, Seong Chan | 1-6,6-3,6-2 |
| ITF Korea F1 | 2018/06/04 01:00 | Jeong, Young-Hoon v Kim, Hyeong Don | 6-2,7-5 |
| ITF Korea F1 | 2018/06/03 01:00 | Jeong, Young-Hoon v Yoon, Ilsang | 6-4,5-7,6-2 |
| ITF Thailand F12 | 2017/12/13 04:15 | Jeong, Young-Hoon v Chen, Ti | 4-6,6-0,1-6 |
| ITF Thailand F12 | 2017/12/12 05:30 | Gao, Xin v Jeong, Young-Hoon | 1-6,7-6,2-6 |
| ITF Thailand F12 Qual | 2017/12/11 03:00 | Jeong, Young-Hoon v Aoran Wang | 6-1,7-5 |
| ITF Thailand F12 Qual | 2017/12/10 03:00 | Kim, Young Seok v Jeong, Young-Hoon | 4-6,3-6 |