| ITF Japan F5 | 2017/04/04 04:40 | Tatsuma Ito v Katsuki Nagao | 7-6,6-4 |
| Challenger Quanzhou | 2017/03/21 04:50 | Yuki Bhambri v Tatsuma Ito | 7-6,6-2 |
| Challenger Shenzhen | 2017/03/14 06:00 | Duckhee Lee v Tatsuma Ito | 6-1,5-7,6-4 |
| Challenger Yokohama | 2017/03/04 05:50 | Tatsuma Ito v Soonwoo Kwon | 4-6,4-6 |
| Challenger Yokohama | 2017/03/03 05:00 | Kaito Uesugi v Tatsuma Ito | 7-6,2-6,6-7 |
| Challenger Yokohama | 2017/03/03 01:00 | Tatsuma Ito v Go Soeda | 6-4,6-1 |
| Challenger Yokohama | 2017/02/28 03:35 | Joris De Loore v Tatsuma Ito | 6-7,1-6 |
| Challenger Kyoto | 2017/02/21 01:30 | Tatsuma Ito v Shuichi Sekiguchi | 6-2,6-3 |
| ITF Japan F5 | 2017/04/03 06:20 | Ken Onishi v Ryota Tanuma | 6-7,2-6 |
| ITF Japan F4 | 2017/03/31 01:00 | Ryota Tanuma v Yusuke Takahashi | 3-6,2-6 |
| ITF Japan F4 | 2017/03/30 03:15 | Ryota Tanuma v Masaki Osafune | 7-5,3-6,6-3 |
| ITF Japan F4 | 2017/03/29 05:20 | Masato Shiga v Ryota Tanuma | 4-6,1-6 |
| ITF Japan F3 | 2017/03/20 01:00 | Ryota Tanuma v Wishaya Trongcharoenchaikul | 3-6,2-6 |
| ITF China F3 | 2017/02/28 06:05 | Danilo Petrovic v Ryota Tanuma | 7-6,6-4 |
| ITF China F2 | 2017/02/24 03:00 | Ryota Tanuma v Fernando Romboli | 3-6,5-7 |
| ITF China F2 | 2017/02/23 05:40 | Danilo Petrovic v Ryota Tanuma | 6-7,6-4,6-7 |