| ITF Japan F3 | 2015/03/24 03:10 | Saito, Takashi v Sasai, Masaki | 4-6,6-4,6-4 |
| ITF Spain F14 | 2015/05/21 10:50 | Tommy Paul v Saito, Takashi | 7-5,6-4 |
| ITF Japan F4 | 2015/03/31 01:00 | Saito, Takashi v Niki, Takuto | 5-7,7-5,3-6 |
| ITF Japan F3 | 2015/03/26 01:00 | Saito, Takashi v Sekiguchi, Shuichi | 3-6,6-7 |
| ITF Japan F3 | 2015/03/24 03:10 | Saito, Takashi v Sasai, Masaki | 4-6,6-4,6-4 |
| ITF Japan F3 | 2015/03/23 01:00 | Saito, Takashi v Chaplin, Jarryd | 7-6,3-6,7-6 |
| ITF Japan F3 | 2015/03/22 01:00 | Saito, Takashi v Matsuzaki, Yutaro | 6-0,6-3 |
| ITF Japan F3 | 2015/03/21 01:00 | Saito, Takashi v Fukuoka, Yusei | 6-1,6-0 |
| ITF Japan F1 | 2015/03/11 06:20 | Saito, Takashi v Yunseong Chung | 5-7,4-6 |
| ITF Guam F1 | 2015/05/26 00:00 | Oku, Hiromasa v Sasai, Masaki | 6-1,6-1 |
| ITF Japan F4 | 2015/03/31 03:50 | Sasai, Masaki v Ryotaro Matsumura | 2-6,2-6 |
| ITF Japan F4 | 2015/03/28 03:00 | Sasai, Masaki v Ono, Masayoshi | 6-4,6-1 |
| ITF Japan F3 | 2015/03/24 03:10 | Saito, Takashi v Sasai, Masaki | 4-6,6-4,6-4 |
| ITF Japan F2 | 2015/03/20 03:00 | Niki, Takuto v Sasai, Masaki | 7-5,6-3 |
| ITF Japan F2 | 2015/03/17 04:10 | Sasai, Masaki v Onozawa, Arata | 6-4,6-4 |
| ITF Japan F2 | 2015/03/15 01:00 | Sasai, Masaki v Issei Okamura | 6-3,6-0 |
| ITF Japan F1 | 2015/03/12 01:00 | Niki, Takuto v Sasai, Masaki | 6-2,6-1 |