Round: 26 Ground: Synthetic outdoor
| ITF - Japan F7 | 2016/06/07 01:00 | Ryotaro Matsumura v Katsuki Nagao | 4-6,4-6 |
| ITF - Japan F6 | 2016/05/31 01:00 | Sho Katayama v Katsuki Nagao | 3-6,6-4,6-3 |
| ITF - Guam F1 | 2016/05/23 00:00 | Katsuki Nagao v Yuya Kibi | 6-7,4-6 |
| ITF - Türkei F19 | 2016/05/11 09:40 | Katsuki Nagao v Fernando Yamacita | 1-6,1-6 |
| ITF - Türkei F18 | 2016/05/06 08:00 | Katsuki Nagao v Marc Sieber | 3-6,6-4,2-6 |
| ITF - Türkei F18 | 2016/05/03 11:50 | Miliaan Niesten v Katsuki Nagao | 4-6,3-6 |
| ITF - Türkei 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 F7 | 2016/06/06 02:50 | Issei Okamura v Kento Takeuchi | 2-6,3-6 |
| ITF - Japan F6 | 2016/06/01 01:00 | Kento Takeuchi v Yuichi Ito | 4-6,3-6 |
| ITF - Japan F6 | 2016/05/31 04:25 | Kento Takeuchi v Ryota Tanuma | 6-3,3-6,6-2 |
| ITF - China F8 | 2016/05/24 06:35 | Kento Takeuchi v Harry Bourchier | 6-7,4-6 |
| ITF - China F5 | 2016/04/12 02:00 | Kento Takeuchi v Rigele Te | 1-6,1-6 |
| ITF - Japan F5 | 2016/04/08 02:30 | Yosuke Watanuki v Kento Takeuchi | 6-1,6-2 |
| ITF - Japan F5 | 2016/04/05 02:00 | Nam Hoang Ly v Kento Takeuchi | 4-6,6-7 |
| ITF - Japan F4 | 2016/03/31 01:00 | Shintaro Imai v Kento Takeuchi | 6-1,6-3 |