| ITF Guam F1 | 2017/06/22 01:30 | Keisuke Numajiri v Ju-Hae Moon | 3-6,3-6 |
| ITF Guam F1 | 2017/06/19 01:15 | Per Nordstrom v Keisuke Numajiri | 1-6,3-6 |
| ITF Japan F7 | 2017/06/03 04:00 | Shoma Kato v Keisuke Numajiri | 6-4,6-1 |
| 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 Japan F7 | 2017/06/06 06:15 | Rimpei Kawakami v Yusuke Takahashi | 1-6,6-4,5-7 |
| ITF Japan F7 | 2017/06/03 01:00 | Katsuki Nagao v Rimpei Kawakami | 6-7,6-7 |
| ITF Japan F5 | 2017/04/02 01:00 | Koichi Sano v Rimpei Kawakami | 6-1,6-2 |
| ITF Japan F5 | 2017/04/01 02:00 | Rimpei Kawakami v Daisuke Sumizawa | 7-5,6-4 |
| ITF Japan F3 | 2017/03/22 02:05 | Hong Chung v Rimpei Kawakami | 6-2,3-6,6-2 |
| ITF Japan F3 | 2017/03/19 01:00 | Arata Onozawa v Rimpei Kawakami | 3-6,6-2,2-6 |
| ITF Japan F3 | 2017/03/18 06:00 | Rimpei Kawakami v Wei-De Lin | 6-2,6-2 |
| ITF Japan F3 | 2017/03/18 00:30 | Rimpei Kawakami v Rio Noguchi | 6-4,7-6 |