Round: 26 Ground: Clay
| ITF Turkey F17 | 2016/04/26 11:00 | Issei Okamura v Marek Jaloviec | 2-6,7-6,6-2 |
| ITF China F5 | 2016/04/14 03:00 | Issei Okamura v Shuichi Sekiguchi | 2-6,2-6 |
| ITF China F5 | 2016/04/12 04:30 | Aoran Wang v Issei Okamura | 3-6,1-6 |
| ITF Japan F5 | 2016/04/05 04:35 | Issei Okamura v Yuya Ito | 0-6,3-6 |
| ITF Japan F4 | 2016/03/31 01:00 | Issei Okamura v Finn Tearney | 3-6,2-6 |
| ITF Japan F4 | 2016/03/30 01:00 | Issei Okamura v Kittiphong Wachiramanowong | 6-4,6-2 |
| ITF Japan F2 | 2016/03/17 02:30 | Issei Okamura v Sidharth Rawat | 4-6,6-1,6-7 |
| ITF Japan F2 | 2016/03/15 04:25 | Young Seok Kim v Issei Okamura | 7-6,3-6,4-6 |
| ITF Turkey F17 | 2016/04/26 11:20 | Katsuki Nagao v Marc Sieber | 2-6,1-6 |
| ITF Turkey F15 | 2016/04/17 09:00 | Marc Sieber v Cem Ilkel | 2-6,6-4,6-4 |
| ITF Turkey F15 | 2016/04/15 08:00 | David Pichler v Marc Sieber | 4-6,1-6 |
| ITF Turkey F15 | 2016/04/14 09:35 | Hyeong Jin Cho v Marc Sieber | 1-6,1-6 |
| ITF Turkey F15 | 2016/04/13 07:00 | Marc Sieber v Bar Tzuf Botzer | 7-5,7-5 |
| ITF Turkey F14 | 2016/04/10 08:00 | Marc Sieber v Sebastian Ofner | 5-7,7-5,6-3 |
| ITF Turkey F14 | 2016/04/09 08:00 | Marc Sieber v Michael Geerts | 6-3,6-2 |
| ITF Turkey F14 | 2016/04/08 08:00 | Lukas Mugevicius v Marc Sieber | 4-6,4-6 |