Round: 25 Ground: Clay
| ITF China F5 | 2016/04/14 03:00 | Issei Okamura v Shuichi Sekiguchi | 2-6,2-6 |
| ITF China F5 | 2016/04/12 04:30 | Aoran Wang v Issei Okamura | 3-6,1-6 |
| ITF Japan F5 | 2016/04/05 04:35 | Issei Okamura v Yuya Ito | 0-6,3-6 |
| ITF Japan F4 | 2016/03/31 01:00 | Issei Okamura v Finn Tearney | 3-6,2-6 |
| ITF Japan F4 | 2016/03/30 01:00 | Issei Okamura v Kittiphong Wachiramanowong | 6-4,6-2 |
| ITF Japan F2 | 2016/03/17 02:30 | Issei Okamura v Sidharth Rawat | 4-6,6-1,6-7 |
| ITF Japan F2 | 2016/03/15 04:25 | Young Seok Kim v Issei Okamura | 7-6,3-6,4-6 |
| ITF Japan F1 | 2016/03/12 04:10 | Issei Okamura v Liang-Chi Huang | 3-6,4-6 |
| ITF Greece F5 | 2016/04/16 13:00 | Daniel Hobart v Yusuke Takahashi | 6-4,6-4 |
| ITF Japan F5 | 2016/04/08 07:15 | Yusuke Takahashi v Yosuke Watanuki | 6-0,3-6,1-6 |
| ITF Japan F5 | 2016/04/08 02:35 | Yuya Ito v Yusuke Takahashi | 6-4,1-6,0-6 |
| ITF Japan F5 | 2016/04/04 00:30 | Ryota Kishi v Yusuke Takahashi | 1-6,0-6 |
| ITF Japan F4 | 2016/03/27 01:00 | Yusuke Takahashi v Keisuke Watanuki | 4-6,3-6 |
| ITF Japan F4 | 2016/03/26 00:00 | Yusuke Takahashi v Kento Takeuchi | 6-3,6-1 |
| ITF Japan F3 | 2016/03/19 03:45 | Yuichi Ito v Yusuke Takahashi | 7-5,6-4 |
| ITF Japan F3 | 2016/03/19 00:30 | Yusuke Takahashi v Ren Nakamura | 6-0,6-0 |