Round: 62 Ground: Hardcourt outdoor
| ITF Korea F8 | 2016/09/06 04:00 | Katsuki Nagao v Keisuke Numajiri | 6-3,4-6,0-6 |
| ITF Korea F7 | 2016/08/31 04:35 | Makoto Ochi v Katsuki Nagao | 6-3,6-2 |
| ITF Korea F7 | 2016/08/30 01:30 | Katsuki Nagao v Jae-Won Choi | 6-3,7-6 |
| ITF Korea F8 | 2016/08/23 04:15 | Jae Hwan Kim v Katsuki Nagao | 6-3,6-2 |
| ITF Japan F8 | 2016/06/16 01:00 | Yuki Mochizuki v Katsuki Nagao | 6-1,6-0 |
| ITF Japan F8 | 2016/06/14 03:00 | Katsuki Nagao v Yuichi Ito | 6-2,6-4 |
| ITF Japan F7 | 2016/06/08 01:00 | Katsuki Nagao v Kento Takeuchi | 4-6,1-6 |
| ITF Japan F7 | 2016/06/07 01:00 | Ryotaro Matsumura v Katsuki Nagao | 4-6,4-6 |