Stadium: Court E Round: 62 Ground: Hardcourt outdoor
| Challenger Yokohama | 2018/03/01 02:00 | Yasutaka Uchiyama v Shinji Hazawa | 6-3,7-5 |
| Challenger Yokohama | 2018/02/27 01:00 | Shinji Hazawa v Soonwoo Kwon | 6-3,4-6,7-6 |
| ITF China F1 | 2018/01/13 04:25 | Wang, Huixin v Shinji Hazawa | 3-6,6-0,6-2 |
| ITF China F1 | 2018/01/11 02:30 | Oh, Seong-Gook v Shinji Hazawa | 3-6,4-6 |
| ITF China F1 | 2018/01/09 05:15 | Xia, Zihao v Shinji Hazawa | 4-6,3-6 |
| Challenger Kobe Qual | 2017/11/04 02:00 | Max Purcell v Shinji Hazawa | 7-6,6-2 |
| ITF Thailand F8 | 2017/10/12 04:40 | Lo, Chien Hsun v Shinji Hazawa | 6-2,6-2 |
| ITF Thailand F8 | 2017/10/11 06:15 | Shinji Hazawa v Takeuchi, Kento (1987) | 6-3,6-1 |
| ITF Japan F1 | 2018/03/04 01:00 | Sung, Yo Han v Masamichi Imamura | 0-6,0-6 |
| ITF Japan F1 | 2018/03/03 01:00 | Masamichi Imamura v Takeshima, Shunrou | 4-6,6-4,6-2 |
| Yokohama, Japan, Qualifying | 2018/02/26 01:00 | Jumpei Yamasaki v Masamichi Imamura | 4-6,7-6,6-4 |
| Yokohama, Japan, Qualifying | 2018/02/25 01:00 | Masamichi Imamura v Wishaya Trongcharoenchaikul | 6-1,6-4 |
| ITF Japan F6 | 2017/05/29 04:25 | Renta Tokuda v Masamichi Imamura | 6-4,6-0 |
| ITF Japan F5 | 2017/04/03 02:25 | Masamichi Imamura v Chan-Yeong Oh | 6-7,6-4,3-6 |
| ITF Japan F5 | 2017/04/01 01:00 | Itsusaki, Kaito v Masamichi Imamura | 3-6,4-6 |
| ITF Japan F3 | 2017/03/18 08:00 | Masamichi Imamura v Nagao, Katsuki | 2-6,1-6 |