| ITF Japan F8 | 06/14 03:00 | 25 | Shiga, Masato v Ito, Yuya | 5-7,2-6 | |
| ITF Japan F7 | 06/10 01:00 | 27 | Shiga, Masato v Katayama, Sho | 3-6,3-6 | |
| ITF Japan F7 | 06/09 02:00 | 26 | Rio Noguchi v Shiga, Masato | 3-6,3-6 | |
| ITF Japan F7 | 06/06 05:55 | 25 | Shiga, Masato v Moritani, Soichiro | 7-5,6-4 | |
| ITF Japan F6 | 05/31 05:30 | 25 | Shiga, Masato v Kibi, Yuya | 6-7,6-4,0-6 | |
| ITF Guam F1 | 05/28 01:35 | 28 | Shiga, Masato v Sekiguchi, Shuichi | 4-6,6-7 | |
| ITF Guam F1 | 05/27 04:25 | 27 | Shiga, Masato v Sasai, Masaki | 6-2,6-1 | |
| ITF Guam F1 | 05/25 00:00 | 26 | Shiga, Masato v Matsuzaki, Yutaro | 6-2,6-2 | |
| ITF Guam F1 | 05/23 01:30 | 25 | Shiga, Masato v Lim, Yong-Kyu | 6-3,6-4 | |
| ITF China F7 | 05/19 02:00 | 26 | Akira Santillan v Shiga, Masato | 7-6,6-2 | |
| ITF China F7 | 05/17 05:10 | 25 | Shiga, Masato v Yu, Cheng-Yu | 3-6,6-4,6-2 | |
| ITF China F6 | 05/12 02:00 | 26 | Shiga, Masato v Rigele Te | 0-6,2-6 | |
| ITF China F6 | 05/11 02:00 | 25 | Zhu, Zhicheng v Shiga, Masato | 4-6,3-6 | |
| ITF Japan F5 | 04/08 01:00 | 26 | Kishi, Ryota v Shiga, Masato | 6-4,5-7,6-3 | |
| ITF Japan F5 | 04/06 04:15 | 25 | Shiga, Masato v Watanuki, Yusuke | 7-6,6-4 | |
| ITF Japan F4 | 03/31 03:20 | 26 | Ryota Tanuma v Shiga, Masato | 6-4,1-6,6-4 | |
| ITF Japan F4 | 03/30 03:25 | 25 | Shiga, Masato v Oku, Hiromasa | 6-4,6-3 | |
| ITF Japan F3 | 03/20 02:30 | 44 | Shiga, Masato v Watanuki, Keisuke | 4-6,6-2,3-6 | |
| ITF Japan F2 | 03/12 02:00 | 54 | Shiga, Masato v Kishi, Ryota | 4-6,1-6 | |
| ITF China F3 | 02/29 04:30 | 25 | Shiga, Masato v He, Yecong | 5-7,1-6 | |
| ITF China F2 | 02/23 02:00 | 25 | Shiga, Masato v Kim, Young Seok | 4-6,3-6 | |
| ITF USA F5 | 01/22 19:00 | 60 | Shiga, Masato v Bryde, Trent | 3-6,3-6 | |
| ITF USA F4 | 01/17 16:00 | 60 | Shiga, Masato v Quiroz, Roberto | 2-6,2-6 | |
| ITF USA F4 | 01/15 15:00 | 60 | Shiga, Masato v Gardner, Kevin | 6-1,6-1 | |
| ITF Chinese Taipei F1 | 08/20 03:30 | 26 | Shiga, Masato v Issei Okamura | 4-6,4-6 | |
| ITF Chinese Taipei F1 | 08/19 02:00 | 25 | Rungkat, Christopher v Shiga, Masato | Retired | |
| ITF China F13 | 08/14 02:00 | 27 | Shiga, Masato v Wu, Di | 0-6,6-7 | |
| ITF China F13 | 08/13 02:00 | 26 | Hung, Jui-Chen v Shiga, Masato | 7-6,6-7,1-6 | |
| ITF China F13 | 08/11 06:00 | 25 | Xia, Zihao v Shiga, Masato | 6-7,6-7 | |
| ITF China F12 | 08/08 02:00 | 28 | Yan Bai v Shiga, Masato | 6-2,6-2 |