Round: 26 Ground: Hardcourt outdoor
| ITF Japan F4 | 2016/03/28 01:00 | Shintaro Imai v Masaki Sasai | 6-2,6-0 |
| ITF Japan F2 | 2017/03/14 05:45 | Shintaro Imai v Rio Noguchi | 6-1,6-1 |
| ITF Japan F1 | 2017/03/08 01:00 | Yuta Shimizu v Shintaro Imai | 7-5,6-2 |
| Challenger Yokohama Qual | 2017/02/25 05:30 | Blaz Rola v Shintaro Imai | 6-4,6-1 |
| ITF Indonesia F2 | 2017/02/17 05:45 | Dayne Kelly v Shintaro Imai | 7-6,6-3 |
| ITF Indonesia F2 | 2017/02/16 06:10 | Rhett Purcell v Shintaro Imai | 6-7,6-2,3-6 |
| ITF Indonesia F2 | 2017/02/14 03:00 | Hao Yuan Ng v Shintaro Imai | 0-6,3-6 |
| ITF Indonesia F1 | 2017/02/10 07:45 | Shintaro Imai v Kento Takeuchi | 2-6,4-6 |
| ITF Indonesia F1 | 2017/02/09 07:50 | Shintaro Imai v Masaya Kobayashi | 4-6,6-2,7-6 |
| ITF Japan F2 | 2017/03/14 07:45 | Masaki Sasai v Wishaya Trongcharoenchaikul | 6-3,6-3 |
| ITF Japan F2 | 2017/03/12 01:00 | Yusei Fukuoka v Masaki Sasai | 1-6,1-6 |
| ITF Japan F1 | 2017/03/08 03:55 | Peter Kobelt v Masaki Sasai | 4-6,6-4,6-1 |
| ITF Japan F1 | 2017/03/06 01:00 | Zhaoyi Cao v Masaki Sasai | 0-6,1-6 |
| Others | 2016/11/12 00:30 | Masaki Sasai v Young Seok Kim | 1-6,5-7 |
| ITF Korea F8 | 2016/09/05 01:30 | Masaki Sasai v Jong-Min Choi | 2-6,6-2,1-6 |
| ITF Korea F8 | 2016/09/04 03:00 | Masaki Sasai v Dong-Hak Sin | 6-2,6-1 |
| ITF Korea F8 | 2016/08/29 02:30 | Masaki Sasai v Ku Keon Kang | 5-7,2-6 |