| ITF Korea F5 | 2018/08/20 01:00 | Jumpei Yamasaki v Jungwon Park | 6-4,6-0 |
| ITF Korea F4 | 2018/08/12 02:00 | Jungwon Park v Hyeong Don Kim | 4-6,4-6 |
| ITF Korea F5 | 2018/08/20 01:00 | Hong Chung v Jae Won Yun | 6-4,6-3 |
| ITF Korea F5 | 2018/08/19 02:00 | Jae Won Yun v Donghwi Shin | 6-2,6-2 |
| ITF Korea F5 | 2018/08/18 02:00 | Geon Ju Shin v Jae Won Yun | 4-6,4-6 |
| ITF Korea F4 | 2018/08/12 02:00 | Jae Won Yun v Seoung Hun Lee | 6-3,2-6,6-7 |
| ITF Korea F4 | 2018/08/11 01:00 | Jae Won Yun v Jaeyoung Park | 6-1,6-3 |
| ITF Korea F3 Qual | 2018/06/17 03:00 | Young-Hoon Jeong v Jae Won Yun | 6-2,6-2 |
| ITF Korea F3 Qual | 2018/06/16 05:00 | Jae Won Yun v Cheong Hwi Kim | 6-0,5-7,6-1 |
| ITF Korea F2 | 2018/06/09 02:00 | Jae Won Yun v Hyeon il Jung | 6-4,4-6,3-6 |