Stadium: Center Court Round: 25 Ground: Hardcourt outdoor
| ITF Turkey F32 | 2018/10/17 09:15 | Jordi Samper-Montana v Christopher O'Connell | 5-7,2-6 |
| ITF Turkey F31 | 2018/10/09 08:40 | Christopher O'Connell v Eric Vanshelboim | 2-6,6-4,2-6 |
| ITF Turkey F30 | 2018/10/05 07:00 | George Von Massow v Christopher O'Connell | 6-4,6-3 |
| ITF Turkey F30 | 2018/10/04 08:45 | Maurizio Speziali v Christopher O'Connell | 4-6,1-6 |
| ITF Turkey F30 | 2018/10/03 07:00 | Erik Crepaldi v Christopher O'Connell | 5-7,3-6 |
| ITF Turkey F29 | 2018/09/25 09:00 | Christopher O'Connell v Nikolas Sanchez Izquierdo | 4-6,2-6 |
| ITF Serbia F3 | 2018/08/21 11:20 | Christopher O'Connell v Ao Shen | 7-5,6-3 |
| Challenger Pullach Qual | 2018/08/04 14:15 | Kimmer Coppejans v Christopher O'Connell | 6-2,6-0 |
| Challenger Ningbo | 2018/10/16 07:15 | Enrique Lopez-Perez v Go Soeda | 6-7,6-3,6-7 |
| ATP Shenzhen | 2018/09/22 09:00 | Brayden Schnur v Go Soeda | 6-4,7-5 |
| Challenger Kaohsiung | 2018/09/20 12:00 | Gael Monfils v Go Soeda | 6-2,6-3 |
| Challenger Kaohsiung | 2018/09/19 05:30 | Go Soeda v Yuichi Sugita | 7-6,7-6 |
| Challenger Shanghai | 2018/09/11 05:15 | Go Soeda v Yibing Wu | 4-6,2-6 |
| Challenger Zhangjiagang | 2018/09/06 02:00 | Go Soeda v Yunseong Chung | 5-7,6-3,2-6 |
| 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 |