Round: 44 Ground: Hardcourt outdoor
| 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 |
| ITF Korea F1 Qual | 2016/06/13 05:00 | Sin, Dong-Hak v Choi, Jong Min | 3-6,3-6 |
| ITF Korea F1 Qual | 2016/06/12 03:00 | Sin, Dong-Hak v Yu, Seong Woon | 6-3,6-2 |
| ITF Korea F1 Qual | 2016/06/11 01:00 | Shin, Geon Ju v Sin, Dong-Hak | 7-6,4-6,4-6 |
| ITF USA F5 | 2016/01/22 16:30 | Sin, Dong-Hak v Benitez Chavarriaga, Juan Manuel | 5-7,0-6 |
| ITF USA F4 | 2016/01/17 19:00 | Du Toit, Riaan v Sin, Dong-Hak | 7-5,2-6,2-6 |
| ITF USA F4 | 2016/01/15 11:30 | van Emburgh, Jake v Sin, Dong-Hak | 4-6,6-7 |
| Challenger Seoul Qual | 2017/05/06 01:00 | Chan-Yeong Oh v Cho, Hyeong Jin | 6-1,6-2 |
| ITF Korea F1 Qual | 2016/06/11 01:00 | Kim, A-Ram v Cho, Hyeong Jin | 6-0,6-3 |
| Turkey F15, Singles Qualifying | 2016/04/14 09:35 | Cho, Hyeong Jin v Sieber, Marc | 1-6,1-6 |
| Turkey F15, Singles Qualifying | 2016/04/13 07:00 | Cho, Hyeong Jin v Marfia, Matteo | 1-6,6-3,6-4 |
| Turkey F15, Singles Qualifying | 2016/04/11 08:00 | Piotr Grynkowski v Cho, Hyeong Jin | 4-6,4-6 |
| Turkey F15, Singles Qualifying | 2016/04/10 08:00 | Cho, Hyeong Jin v Goyal, Medhir | 6-1,6-0 |
| Turkey F14, Singles Qualifying | 2016/04/05 07:00 | Cho, Hyeong Jin v Elmar Ejupovic | 1-6,6-3,3-6 |
| Turkey F14, Singles Qualifying | 2016/04/04 07:00 | Khan, Shahbaaz v Cho, Hyeong Jin | 2-6,3-6 |