Round: 26 Ground: Clay
| ITF Japan F1 | 2016/03/08 01:00 | Issei Okamura v Kento Takeuchi | 7-6,7-6 |
| ITF Turkey F6 | 2016/02/12 09:00 | Issei Okamura v Seong Chan Hong | 7-5,4-6,3-6 |
| ITF Turkey F6 | 2016/02/11 13:45 | Patrik Nema v Issei Okamura | 1-6,5-7 |
| ITF Turkey F6 | 2016/02/09 09:35 | Maxime Pauwels v Issei Okamura | 6-3,3-6,3-6 |
| ITF Turkey F5 | 2016/02/04 08:00 | Issei Okamura v Lenny Hampel | 6-1,0-6,6-7 |
| ITF Turkey F5 | 2016/02/02 09:30 | Issei Okamura v Mert Zincirli | 6-4,6-2 |
| ITF Turkey F4 | 2016/01/25 09:30 | Issei Okamura v Ryota Kishi | 2-6,6-2,1-6 |
| ITF Turkey F4 | 2016/01/24 08:00 | Issei Okamura v Peter Balla | 6-2,6-2 |
| ITF Turkey F8 | 2016/02/25 08:00 | Marc Sieber v Nicolaas Scholtz | 4-6,2-6 |
| ITF Turkey F8 | 2016/02/23 09:00 | Lukas Mugevicius v Marc Sieber | 2-6,1-6 |
| ITF Turkey F7 | 2016/02/16 08:00 | Marc Sieber v Alexander Lazov | 6-4,3-6,1-6 |
| ITF Germany F17 | 2015/10/22 11:00 | Niels Lootsma v Marc Sieber | 5-7,6-4,6-3 |
| ITF Germany F17 | 2015/10/20 09:00 | Goncalo Oliveira v Marc Sieber | 3-6,4-6 |
| ITF Germany F15 | 2015/10/08 13:30 | Marc Sieber v Dominik Boehler | 5-7,7-5,2-6 |
| ITF Germany F14 | 2015/10/04 11:00 | Maximilian Marterer v Marc Sieber | 6-2,6-2 |
| ITF Germany F14 | 2015/10/03 11:00 | Marc Sieber v Tom Schonenberg | 4-6,6-3,6-3 |