Ground: Synthetic outdoor
| ITF Japan F7 Qual | 2015/06/15 00:30 | Renta Tokuda v Keisuke Numajiri | 3-6,1-6 |
| ITF Japan F7 Qual | 2015/06/13 00:00 | Naoto Kai v Keisuke Numajiri | 2-6,3-6 |
| ITF Japan F6 Qual | 2015/06/07 05:00 | Koichi Sano v Keisuke Numajiri | 6-0,4-6,6-1 |
| ITF USA F16 | 2015/05/09 16:00 | Justin Lunn v Keisuke Numajiri | 3-6,2-6 |
| ITF USA F16 | 2015/05/08 20:00 | Brandon Donaldson v Keisuke Numajiri | 1-6,2-6 |
| ITF USA F14 | 2015/04/29 15:30 | Keisuke Numajiri v Facundo Mena | 6-7,3-6 |
| ITF USA F14 | 2015/04/27 15:00 | Yuanfeng Li v Keisuke Numajiri | 3-6,2-6 |
| ITF Japan F4 | 2015/03/29 00:00 | Keisuke Numajiri v Ken Onoda | 6-0,1-6,6-3 |
| ITF Japan F7 | 2015/06/16 01:45 | Ju-Hae Moon v David Barclay | 6-2,6-2 |
| ITF Japan F7 Qual | 2015/06/14 00:00 | Ju-Hae Moon v Kennosuke Nouchi | 6-3,6-4 |
| ITF Japan F6 | 2015/06/09 05:00 | Ju-Hae Moon v Duckhee Lee | 1-6,1-6 |
| ITF Japan F6 Qual | 2015/06/08 01:00 | Soichiro Moritani v Ju-Hae Moon | 2-6,1-6 |