Round: 25 Ground: Hardcourt outdoor
| ITF Guam F1 | 2014/05/30 00:00 | Yuya Kibi v Katsuki Nagao | 6-3,6-3 |
| ITF Turkey F19 | 2016/05/11 09:40 | Katsuki Nagao v Fernando Yamacita | 1-6,1-6 |
| ITF Turkey F18 | 2016/05/06 08:00 | Katsuki Nagao v Marc Sieber | 3-6,6-4,2-6 |
| ITF Turkey F18 | 2016/05/03 11:50 | Miliaan Niesten v Katsuki Nagao | 4-6,3-6 |
| ITF Turkey F17 | 2016/04/26 11:20 | Katsuki Nagao v Marc Sieber | 2-6,1-6 |
| ITF Japan F5 | 2016/04/05 07:45 | Hiromasa Oku v Katsuki Nagao | 7-6,5-7,6-1 |
| ITF Japan F4 | 2016/03/28 01:00 | Katsuki Nagao v Sanhui Shin | 1-6,1-6 |
| ITF Japan F4 | 2016/03/27 01:00 | Katsuki Nagao v Masaki Osafune | 6-1,6-2 |
| ITF Japan F3 | 2016/03/20 01:00 | Yuya Ito v Katsuki Nagao | 6-3,6-4 |
| ITF Japan F5 | 2016/04/09 03:00 | Yuya Kibi v Yosuke Watanuki | 1-6,6-3,4-6 |
| ITF Japan F5 | 2016/04/08 05:30 | Yuichi Ito v Yuya Kibi | 4-6,2-6 |
| ITF Japan F5 | 2016/04/08 01:00 | Hiromasa Oku v Yuya Kibi | 2-6,4-6 |
| ITF Japan F5 | 2016/04/05 02:00 | Ryota Tanuma v Yuya Kibi | 4-6,2-6 |
| ITF Japan F4 | 2016/03/30 03:10 | Yuya Kibi v Xin Gao | 4-6,6-3,1-6 |
| ITF Japan F3 | 2016/03/26 02:00 | Duckhee Lee v Yuya Kibi | 6-2,6-3 |
| ITF Japan F3 | 2016/03/25 01:00 | Yuya Kibi v Xin Gao | 6-3,6-2 |
| ITF Japan F3 | 2016/03/24 03:15 | Yuya Kibi v Makoto Ochi | 6-1,3-6,6-2 |