Stadium: Court 1 Round: 26 Ground: Hardcourt outdoor
| ITF Korea F2 | 2017/06/09 02:00 | Dong-Hak Sin v Cheong-Eui Kim | 4-6,3-6 |
| ITF Korea F1 | 2017/06/01 03:45 | Cheong-Eui Kim v Dong-Hak Sin | 6-3,7-5 |
| ITF Korea F1 Qual | 2014/04/29 00:30 | Cheong-Eui Kim v Dong-Hak Sin | 6-4,6-4 |
| ITF Korea F1 | 2018/06/06 01:00 | Cheong-Eui Kim v Joy Vigani | 7-6,6-0 |
| ITF China F6 | 2018/05/15 02:00 | Cheong-Eui Kim v Sami Reinwein | 4-6,3-6 |
| ITF China F5 | 2018/05/10 03:00 | Cheong-Eui Kim v Jumpei Yamasaki | 2-6,5-7 |
| ITF China F5 | 2018/05/08 02:00 | Cheong-Eui Kim v Patrik Niklas-Salminen | 6-7,6-4,6-4 |
| ITF China F4 | 2018/05/05 03:00 | Cheong-Eui Kim v Yecong He | 4-6,6-7 |
| ITF China F4 | 2018/05/04 04:45 | Cheong-Eui Kim v Shi Hong Zeng | 6-1,6-1 |
| ITF China F4 | 2018/05/01 05:25 | Cheong-Eui Kim v Mousheg Hovhannisyan | 6-4,6-3 |
| Challenger Qujing | 2018/03/19 02:00 | Lorenzo Sonego v Cheong-Eui Kim | 6-1,6-4 |
| ITF Korea F1 | 2018/06/05 03:50 | Dong-Hak Sin v Ju-Hae Moon | 6-1,6-4 |
| ITF Korea F1 | 2018/06/04 01:00 | Dong-Hak Sin v Jun Sang Park | 6-2,6-3 |
| ITF Korea F1 | 2018/06/03 02:00 | Dong-Hak Sin v Woo Hyeok Jang | 6-1,6-2 |
| Challenger Gwangju | 2017/09/19 01:30 | Dong-Hak Sin v Matthew Ebden | 5-7,3-6 |
| ITF Korea F5 | 2017/06/28 01:00 | Seong Chan Hong v Dong-Hak Sin | 7-5,6-3 |
| ITF Korea F5 | 2017/06/27 01:30 | Dong-Hak Sin v Woo-Ram Kim | 6-2,3-6,7-5 |
| ITF Korea F5 | 2017/06/26 01:30 | Dong-Hak Sin v Geon Ju Shin | 7-5,6-3 |
| ITF Korea F4 | 2017/06/20 01:00 | Dong-Hak Sin v Min Hyeok Cho | 4-6,0-6 |