| ITF Korea F5 | 2018/08/20 01:00 | 야마사키, 점페이 v 박, 중원 | 6-4,6-0 |
| ITF Korea F4 | 2018/08/12 02:00 | 박, 중원 v Kim, Hyeong Don | 4-6,4-6 |
| ITF Korea F5 | 2018/08/20 01:00 | 충, 훙 v Yun, Jae Won | 6-4,6-3 |
| ITF Korea F5 | 2018/08/19 02:00 | Yun, Jae Won v 신, 동휘 | 6-2,6-2 |
| ITF Korea F5 | 2018/08/18 02:00 | Shin, Geon Ju v Yun, Jae Won | 4-6,4-6 |
| ITF Korea F4 | 2018/08/12 02:00 | Yun, Jae Won v 이, 성훈 | 6-3,2-6,6-7 |
| ITF Korea F4 | 2018/08/11 01:00 | Yun, Jae Won v Park, Jaeyoung | 6-1,6-3 |
| Korea F3, Singles Qualifying | 2018/06/17 03:00 | 정, 영훈 v Yun, Jae Won | 6-2,6-2 |
| Korea F3, Singles Qualifying | 2018/06/16 05:00 | Yun, Jae Won v 김, 청휘 | 6-0,5-7,6-1 |
| ITF Korea F2 | 2018/06/09 02:00 | Yun, Jae Won v 중, 현일 | 6-4,4-6,3-6 |