Round: 54 Ground: Synthetic outdoor
| ITF Japan F3 | 2017/03/18 00:30 | Shane Vinsant v Shoma Kato | 6-1,6-1 |
| ITF Japan F2 | 2017/03/12 04:00 | Shoma Kato v Rio Noguchi | 1-6,1-6 |
| ITF Japan F1 | 2017/03/08 01:00 | Shoma Kato v Hiroyasu Ehara | 3-6,2-6 |
| ITF Indonesia F3 Qual | 2017/02/20 11:15 | Robin Thour v Shoma Kato | 6-3,7-5 |
| ITF Indonesia F3 Qual | 2017/02/19 10:25 | Cristian Stefan Moldovan v Shoma Kato | 4-6,1-6 |
| ITF Indonesia F2 Qual | 2017/02/12 12:30 | Rhett Purcell v Shoma Kato | 7-6,6-4 |
| ITF Indonesia F2 Qual | 2017/02/11 10:55 | Shoma Kato v Skyler Butts | 6-2,6-0 |
| Others | 2016/11/05 02:00 | Kuan-Yi Lee v Shoma Kato | 6-1,6-3 |
| ITF Turkey F19 Qual | 2017/05/14 07:00 | Keisuke Numajiri v Alexander Pavlioutchenkov | 5-7,6-2,3-6 |
| ITF Turkey F18 | 2017/05/10 08:05 | Dennis Novak v Keisuke Numajiri | 6-1,6-0 |
| ITF Turkey F14 | 2017/04/10 07:30 | Keisuke Numajiri v Filip Brtnicky | 1-6,3-6 |
| ITF Turkey F14 | 2017/04/09 07:00 | Keisuke Numajiri v Sami Ben Abdennibi | 6-2,3-6,6-3 |
| ITF Turkey F13 | 2017/04/02 07:30 | Keisuke Numajiri v Mert Naci Turker | 7-6,2-6,3-6 |
| ITF Turkey F12 | 2017/03/28 09:20 | Julien Cagnina v Keisuke Numajiri | 6-1,6-1 |
| ITF Turkey F12 | 2017/03/27 07:00 | Sarp Agabigun v Keisuke Numajiri | 2-6,3-6 |
| ITF Turkey F12 | 2017/03/26 07:00 | Rishabdev Raman v Keisuke Numajiri | 2-6,0-6 |