Stadium: Court 5 Round: 26 Ground: Hardcourt outdoor
| Challenger Winnipeg | 2018/07/12 20:00 | Yunseong Chung v Go Soeda | 2-6,6-2,4-6 |
| Challenger Zhangjiagang | 2018/09/05 02:00 | Go Soeda v Alessandro Bega | 7-5,7-5 |
| US Open | 2018/08/22 17:30 | Mitchell Krueger v Go Soeda | 6-3,6-3 |
| Challenger Chengdu | 2018/07/31 03:00 | Zihao Xia v Go Soeda | 7-6,6-3 |
| Challenger Gatineau | 2018/07/21 18:10 | Ugo Humbert v Go Soeda | 6-4,6-1 |
| Challenger Gatineau | 2018/07/20 20:25 | Maximilian Neuchrist v Go Soeda | 6-7,3-6 |
| Challenger Gatineau | 2018/07/19 15:00 | Jacob Grills v Go Soeda | 6-2,1-6,4-6 |
| Challenger Gatineau | 2018/07/17 14:00 | Yusuke Takahashi v Go Soeda | 4-6,3-6 |
| Challenger Winnipeg | 2018/07/14 19:55 | Lucas Miedler v Go Soeda | 6-3,3-6,6-3 |
| Challenger Zhangjiagang | 2018/09/05 02:00 | Yunseong Chung v Roman Safiullin | 3-6,6-4,6-3 |
| Challenger Gwangju | 2018/08/14 01:00 | Yunseong Chung v Benjamin Lock | 4-6,6-4,3-6 |
| Challenger Lexington | 2018/08/04 19:50 | Yunseong Chung v Stefano Napolitano | 5-7,3-6 |
| Challenger Lexington | 2018/08/02 14:00 | Jeffrey John Wolf v Yunseong Chung | 3-6,7-6,5-7 |
| Challenger Lexington | 2018/08/01 01:15 | Yunseong Chung v William Bushamuka | 6-2,6-3 |
| Challenger Binghamton | 2018/07/25 14:30 | Jay Clarke v Yunseong Chung | 6-1,7-6 |
| Challenger Gatineau | 2018/07/18 17:20 | Bradley Klahn v Yunseong Chung | 7-5,6-4 |
| Challenger Gatineau | 2018/07/17 20:55 | Yunseong Chung v Mitchell Krueger | 7-6,6-4 |