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