Round: 45 Ground: Hardcourt indoor
| ITF Chinese Taipei F1 | 2015/08/20 03:30 | Masato Shiga v Issei Okamura | 4-6,4-6 |
| ITF Japan F4 | 2014/04/04 01:00 | Issei Okamura v Masato Shiga | 0-6,3-6 |
| ITF Thailand F2 | 2016/08/29 03:00 | Renta Tokuda v Issei Okamura | 6-4,6-1 |
| ITF Thailand F4 | 2016/08/25 03:00 | Ti Chen v Issei Okamura | 6-1,6-0 |
| ITF Thailand F4 | 2016/08/24 03:00 | Phassawit Bura'ritta v Issei Okamura | 3-6,4-6 |
| ITF Thailand F4 | 2016/08/22 03:00 | Issei Okamura v N. Vijay Sundar Prashanth | 6-2,4-6,6-4 |
| ITF China F13 | 2016/07/23 02:30 | Issei Okamura v Thomas Fancutt | 2-6,4-6 |
| ITF China F13 | 2016/07/22 05:20 | Ryota Tanuma v Issei Okamura | 3-6,6-7 |
| ITF China F13 | 2016/07/21 02:30 | Issei Okamura v Ranjeet Virali-Murugesan | 6-4,6-3 |
| ITF China F13 | 2016/07/20 02:30 | Issei Okamura v Koichi Sano | 6-0,6-2 |
| ITF Indonesia F3 | 2016/08/31 06:30 | Aditya Hari Sasongko v Masato Shiga | 1-6,4-6 |
| ITF Indonesia F3 | 2016/08/30 09:30 | Fabian A Soemarno v Masato Shiga | 1-6,2-5 |
| ITF Indonesia F2 | 2016/08/25 02:00 | Cheng-Yu Yu v Masato Shiga | 6-4,6-3 |
| ITF Indonesia F2 | 2016/08/24 03:40 | Arief Rahman v Masato Shiga | 4-6,1-6 |
| ITF Indonesia F2 | 2016/08/23 02:00 | Anthony Susanto v Masato Shiga | 6-3,4-6,1-6 |
| ITF Vietnam F8 | 2016/08/10 03:20 | Masato Shiga v David Agung Susanto | 4-6,4-6 |
| ITF Vietnam F8 | 2016/08/09 06:05 | Masato Shiga v Aoran Wang | 4-6,6-4,6-4 |
| ITF Vietnam F8 | 2016/08/05 03:00 | Yusuke Takahashi v Masato Shiga | 6-4,6-0 |