Round: 25 Ground: Synthetic outdoor
| ITF Japan F5 | 2017/04/07 04:30 | Yusuke Watanuki v Shintaro Imai | 6-1,6-3 |
| ITF Japan F5 | 2017/04/05 02:10 | Gengo Kikuchi v Shintaro Imai | 4-6,6-4,3-6 |
| ITF Japan F5 | 2017/04/03 04:15 | Yuta Shimizu v Shintaro Imai | 4-6,2-6 |
| ITF Japan F4 | 2017/03/29 01:00 | Shintaro Imai v Shinji Hazawa | 6-1,3-6,4-6 |
| ITF Japan F2 | 2017/03/16 02:00 | Shintaro Imai v Masaki Sasai | 6-7,3-6 |
| 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 Japan F4 | 2017/03/25 00:00 | Yuki Nakamura v Naoto Kai | 6-4,4-6,6-1 |
| ITF Japan F1 | 2017/03/04 03:30 | Ibuki Furuta v Naoto Kai | 6-2,6-0 |
| ITF Japan F7 | 2016/06/06 01:00 | Ryota Tanuma v Naoto Kai | 6-4,6-3 |
| ITF Japan F4 | 2016/03/26 00:00 | Gengo Kikuchi v Naoto Kai | 6-2,7-6 |
| ITF Japan F1 | 2016/03/05 03:00 | Naoto Kai v Kazuma Kawachi | 6-4,3-6,4-6 |
| ITF Japan F7 Qual | 2015/06/13 00:00 | Naoto Kai v Keisuke Numajiri | 2-6,3-6 |