Stadium: Court 1 Round: 27
| ITF China F7 | 2018/06/01 06:15 | Xin Gao v Yunseong Chung | 6-0,6-7,6-3 |
| ITF China F7 | 2018/05/31 04:30 | Chien Hsun Lo v Yunseong Chung | 2-6,7-5,5-7 |
| ITF China F7 | 2018/05/29 05:30 | Zhenxiong Dong v Yunseong Chung | 2-6,1-6 |
| Challenger Busan | 2018/05/15 03:25 | Matthew Ebden v Yunseong Chung | 6-3,3-6,6-3 |
| Challenger Busan Qual | 2018/05/14 02:00 | Yunseong Chung v Luke Saville | 6-7,7-6,6-0 |
| Challenger Busan Qual | 2018/05/13 04:00 | Jason Kubler v Yunseong Chung | 3-6,2-6 |
| Challenger Busan Qual | 2018/05/12 02:55 | Yunseong Chung v Ben Patael | 6-3,6-2 |
| Challenger Gimcheon | 2018/05/08 04:05 | Jordan Thompson v Yunseong Chung | 6-4,6-1 |
| ITF Korea F1 | 2018/06/04 02:20 | Oh-Hee Kwon v Alec Adamson | 5-7,4-6 |
| ITF Guam F1 | 2017/06/22 01:30 | Soichiro Moritani v Oh-Hee Kwon | 6-2,2-6,6-3 |
| ITF Guam F1 | 2017/06/21 02:15 | Ryota Kishi v Oh-Hee Kwon | 5-7,2-6 |
| ITF Japan F8 | 2017/06/14 01:00 | Sho Shimabukuro v Oh-Hee Kwon | 7-6,0-6,7-6 |
| ITF Korea F2 | 2017/06/07 04:20 | Oh-Hee Kwon v Seungri Choi | 6-0,6-1 |
| ITF Korea F2 Qual | 2017/06/05 03:00 | Oh-Hee Kwon v Min Gyeom Kim | 6-0,6-1 |
| ITF Korea F2 Qual | 2017/06/04 03:00 | Oh-Hee Kwon v Hyun Sik Go | 6-1,6-4 |
| ITF Korea F1 | 2017/05/31 02:00 | Ku Keon Kang v Oh-Hee Kwon | 2-6,7-5,6-0 |