| ITF Korea F2 Qual | 2017/06/03 03:00 | Seong-Gook Oh v Jun Sang Park | 4-6,2-6 |
| ITF Korea F1 Qual | 2017/05/28 01:00 | Dong-Kyu Lee v Jun Sang Park | 6-2,7-5 |
| ITF Korea F1 Qual | 2016/06/13 03:00 | Daniel Yoo v Jun Sang Park | 6-2,6-4 |
| ITF Korea F1 | 2015/05/16 05:00 | Jong-Min Choi v Jun Sang Park | 6-2,3-6,7-6 |
| ITF Korea F2 Qual | 2017/06/04 03:00 | Dong-Hak Sin v Ivan Kalinin | 6-2,6-2 |
| ITF Korea F1 | 2017/06/01 03:45 | Cheong-Eui Kim v Dong-Hak Sin | 6-3,7-5 |
| ITF Korea F1 | 2017/05/31 04:50 | Dong-Hak Sin v Sung Jun Park | 4-6,6-2,6-3 |
| ITF Korea F1 Qual | 2017/05/29 02:55 | Sungbeen Sim v Dong-Hak Sin | 3-6,0-6 |
| ITF Korea F1 Qual | 2017/05/28 03:30 | Dong-Hak Sin v Dukyoung Kim | 3-6,6-3,6-1 |
| ITF Korea F1 Qual | 2017/05/27 02:00 | Dong-Hak Sin v Hyeong Jin Cho | 6-3,6-4 |
| ITF Korea F8 | 2016/09/04 03:00 | Masaki Sasai v Dong-Hak Sin | 6-2,6-1 |
| ITF Korea F8 | 2016/09/03 01:00 | Jae-Won Choi v Dong-Hak Sin | 4-6,5-7 |