Stadium: OURT 6C Round: 26 Ground: Hardcourt outdoor
| Challenger Winnipeg | 2018/07/10 18:20 | Volfson, David v Yunseong Chung | 3-6,3-6 |
| Challenger Winnipeg Qual | 2018/07/09 16:40 | Yunseong Chung v Lin, Jack Mingjie | 6-2,6-2 |
| Challenger Winnipeg Qual | 2018/07/08 21:50 | Yunseong Chung v Yshai Oliel | 6-3,6-1 |
| ITF Korea F3 | 2018/06/24 05:00 | Yunseong Chung v Nam, Ji Sung | 6-1,6-3 |
| ITF Korea F3 | 2018/06/23 02:00 | Soonwoo Kwon v Yunseong Chung | 4-6,4-6 |
| ITF Korea F3 | 2018/06/22 03:00 | Yunseong Chung v Kwon, OH-Hee | 6-4,6-1 |
| ITF Korea F3 | 2018/06/20 02:30 | Yunseong Chung v Song, Min-Kyu | 7-6,7-6 |
| ITF Korea F3 | 2018/06/19 06:00 | Yunseong Chung v Moon, Ju-Hae | 6-3,4-6,7-5 |
| Challenger Winnipeg | 2018/07/10 23:00 | Grigelis, Laurynas v Soeda, Go | 3-6,0-6 |
| Wimbledon Qual | 2018/06/26 15:30 | Soeda, Go v Melzer, Jurgen | 3-6,2-6 |
| Wimbledon Qual | 2018/06/25 12:20 | Hugo Dellien v Soeda, Go | 4-6,2-6 |
| Challenger Ilkley Qual | 2018/06/18 13:00 | Noah Rubin v Soeda, Go | 2-6,6-4,5-3 |
| Challenger Ilkley Qual | 2018/06/17 14:15 | Stefano Napolitano v Soeda, Go | 1-6,4-6 |
| Challenger Ilkley Qual | 2018/06/16 13:50 | Christopher Eubanks v Soeda, Go | 2-6,2-6 |
| French Open Qual | 2018/05/21 08:00 | Akira Santillan v Soeda, Go | 6-2,6-2 |
| Challenger - Busan | 2018/05/17 02:00 | Soeda, Go v Marcos Giron | 4-6,4-6 |