Round: 27 Ground: Hardcourt outdoor
| ITF Chinese Taipei F1 | 2015/08/20 03:30 | Masato Shiga v Issei Okamura | 4-6,4-6 |
| ITF China F13 | 2015/08/14 02:00 | Masato Shiga v Di Wu | 0-6,6-7 |
| ITF China F13 | 2015/08/13 02:00 | Jui-Chen Hung v Masato Shiga | 7-6,6-7,1-6 |
| ITF China F13 | 2015/08/11 06:00 | Zihao Xia v Masato Shiga | 6-7,6-7 |
| ITF China F12 | 2015/08/08 02:00 | Yan Bai v Masato Shiga | 6-2,6-2 |
| ITF China F12 | 2015/08/07 07:00 | Yuqing Ning v Masato Shiga | 0-6,3-6 |
| ITF China F12 | 2015/08/06 08:00 | Masato Shiga v Tsung-Hua Yang | 2-6,6-4,7-5 |
| ITF China F12 | 2015/08/04 08:00 | Yuanfeng Li v Masato Shiga | 5-7,3-6 |
| ITF Japan F8 | 2015/06/25 01:00 | Sho Katayama v Masaki Sasai | 6-3,6-1 |
| ITF Japan F7 | 2015/06/17 01:00 | Masaki Sasai v Ryota Tanuma | 1-6,3-6 |
| ITF Japan F6 | 2015/06/12 05:30 | Takuto Niki v Masaki Sasai | 6-2,6-1 |
| ITF Japan F6 | 2015/06/11 01:00 | Yosuke Watanuki v Masaki Sasai | 3-6,2-6 |
| ITF Japan F6 | 2015/06/10 03:10 | Masaki Sasai v Shuichi Sekiguchi | 7-6,7-5 |
| ITF Japan F5 | 2015/06/03 06:30 | Takashi Saito v Masaki Sasai | 6-0,6-2 |
| ITF Guam F1 | 2015/05/26 00:00 | Hiromasa Oku v Masaki Sasai | 6-1,6-1 |
| ITF Japan F4 | 2015/03/31 03:50 | Masaki Sasai v Ryotaro Matsumura | 2-6,2-6 |