Ground: Hardcourt outdoor
| ITF Turkey F32 | 2014/09/18 08:30 | Katsuki Nagao v Duckhee Lee | 6-4,2-6,3-6 |
| ITF Turkey F32 | 2014/09/17 09:00 | Shonigmatjon Shofayziyev v Katsuki Nagao | 4-6,2-6 |
| ITF Japan F8 | 2014/06/27 01:00 | Katsuki Nagao v Yoshihito Nishioka | 0-6,4-6 |
| ITF Japan F7 | 2014/06/19 01:00 | Katsuki Nagao v Yohei Ono | 5-7,5-7 |
| ITF Japan F6 | 2014/06/10 01:30 | Katsuki Nagao v Jui-Chen Hung | 6-7,7-5,2-6 |
| ITF Japan F5 | 2014/06/04 01:00 | Hiromasa Oku v Katsuki Nagao | 7-6,7-6 |
| ITF Japan F5 | 2014/06/02 01:00 | Issei Okamura v Katsuki Nagao | 1-6,6-7 |
| ITF Guam F1 | 2014/05/30 00:00 | Yuya Kibi v Katsuki Nagao | 6-3,6-3 |