Stadium: Indoor 5 Round: 26 Ground: Hardcourt outdoor
| Challenger Kobe | 2018/11/12 04:55 | Go Soeda v Kaito Uesugi | 6-3,6-1 |
| Challenger Shenzhen 2 | 2018/10/30 02:00 | Go Soeda v Blaz Kavcic | 3-6,3-6 |
| Challenger Liuzhou | 2018/10/22 04:35 | Go Soeda v Mohamed Safwat | 6-3,3-6,4-6 |
| Challenger Ningbo | 2018/10/18 03:00 | Go Soeda v Federico Gaio | 4-6,6-7 |
| 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 Ismaning | 2018/10/17 11:00 | Gianluca Mager v Christian Seraphim | 6-7,6-7 |
| Challenger Florence | 2018/10/04 11:30 | Pablo Andujar v Gianluca Mager | 6-2,6-4 |
| Challenger Florence | 2018/10/02 15:45 | Gianluca Mager v Alexey Vatutin | 6-7,6-4,6-2 |
| Challenger Florence | 2018/09/30 14:25 | Geoffrey Blancaneaux v Gianluca Mager | 1-6,6-7 |
| Challenger Florence | 2018/09/29 14:15 | Daniele Capecchi v Gianluca Mager | 3-6,1-6 |
| Challenger Banja Luka | 2018/09/11 08:00 | Bernabe Zapata Miralles v Gianluca Mager | 6-4,6-1 |
| Challenger Genova | 2018/09/02 13:05 | Gianluca Mager v Joao Souza | 4-6,4-6 |
| Challenger Como | 2018/08/28 12:20 | Gianluca Mager v Juan Ignacio Londero | 4-6,7-6,6-7 |