| ITF Korea F2 | 2018/06/09 03:00 | Hyeong Don Kim v A-Ram Kim | 6-2,6-1 |
| ITF Korea F1 | 2018/06/04 01:00 | Young-Hoon Jeong v Hyeong Don Kim | 6-2,7-5 |
| ITF Korea F1 | 2018/06/02 03:30 | Hyeong Don Kim v Eun Chong Shin | 6-2,6-0 |
| ITF Turkey F6 | 2018/02/10 09:00 | Hyeong Don Kim v Andrei Stefan Apostol | 2-6,2-6 |
| ITF Turkey F5 | 2018/02/04 07:30 | Nikita Mashtakov v Hyeong Don Kim | 6-1,7-5 |
| ITF Turkey F5 | 2018/02/03 07:00 | Martin Van Der Meerschen v Hyeong Don Kim | 2-6,1-6 |
| ITF Turkey F4 | 2018/01/29 08:00 | Timur Kiyamov v Hyeong Don Kim | 6-3,6-3 |
| ITF Turkey F3 | 2018/01/22 10:00 | Hyeong Don Kim v Nikita Mashtakov | 7-5,5-7,3-6 |
| ITF Korea F2 | 2018/06/10 06:30 | Woo Young Lee v Yu Hsiang Chiu | 2-6,3-6 |
| ITF Korea F1 | 2018/06/03 03:30 | Yu Hsiang Chiu v Sung Jun Park | 4-6,2-6 |
| ITF Japan F5 | 2018/04/01 00:30 | Yu Hsiang Chiu v Masaki Osafune | 6-2,6-2 |
| ITF Japan F5 | 2018/03/31 00:30 | Yu Hsiang Chiu v Tamaki Yamao | 6-2,7-6 |
| ITF Japan F4 | 2018/03/28 03:20 | Chuhan Wang v Yu Hsiang Chiu | 3-6,6-0,6-4 |
| ITF Japan F4 | 2018/03/26 01:00 | Cing-Yang Meng v Yu Hsiang Chiu | 7-6,1-6,1-6 |
| ITF Japan F4 | 2018/03/25 05:00 | Masaki Osafune v Yu Hsiang Chiu | 2-6,4-6 |
| ITF India F4 | 2018/03/20 08:00 | Yu Hsiang Chiu v Anirudh Chandrasekar | 7-6,5-7,5-7 |