Stadium: Court H Round: 25 Ground: Hardcourt outdoor
| ITF China F3 | 2018/01/25 05:15 | Issei Okamura v Tsung-Hua Yang | 3-6,1-6 |
| ITF China F3 | 2018/01/24 05:30 | Issei Okamura v Cing-Yang Meng | 7-6,6-2 |
| ITF China F3 | 2018/01/23 02:30 | Yan Bai v Issei Okamura | 1-6,0-6 |
| ITF China F2 | 2018/01/18 02:30 | Issei Okamura v Goran Markovic | 6-2,0-6,5-7 |
| ITF China F2 | 2018/01/16 03:40 | Hu Liu v Issei Okamura | 7-5,4-6,2-6 |
| ITF China F1 | 2018/01/11 02:30 | Ryota Tanuma v Issei Okamura | 6-1,6-2 |
| ITF China F1 | 2018/01/09 04:50 | Issei Okamura v Lingxi Zhao | 3-6,6-3,6-4 |
| ITF Vietnam F3 | 2017/11/25 03:00 | Issei Okamura v Arjun Kadhe | 1-6,1-6 |
| ITF Japan F1 | 2018/03/05 01:00 | Shinji Hazawa v Masamichi Imamura | 4-6,7-5,6-4 |
| 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 | Huixin Wang v Shinji Hazawa | 3-6,6-0,6-2 |
| ITF China F1 | 2018/01/11 02:30 | Seong-Gook Oh v Shinji Hazawa | 3-6,4-6 |
| ITF China F1 | 2018/01/09 05:15 | Zihao Xia 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 | Chien Hsun Lo v Shinji Hazawa | 6-2,6-2 |