Ground: Clay
| 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 F2 | 2015/03/14 00:30 | Keisuke Numajiri v Kaito Uesugi | 4-6,6-2,2-6 |
| ITF Japan F8 | 2014/06/25 02:45 | Yasutaka Uchiyama v Keisuke Numajiri | 6-0,6-2 |
| ITF Japan F6 Qual | 2014/06/07 00:00 | Keisuke Numajiri v Yuki Yudate | 6-2,4-6,6-4 |