Round: 27 Ground: Hardcourt outdoor
| ITF - Türkei F17 | 2016/04/26 11:20 | Katsuki Nagao v Marc Sieber | 2-6,1-6 |
| 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 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 F3 | 2016/03/19 03:45 | Ryota Kishi v Katsuki Nagao | 1-6,5-7 |
| ITF - Japan F2 | 2016/03/15 01:00 | Katsuki Nagao v Hiroka Kondo | 6-7,0-6 |
| ITF - Türkei F18 | 2016/05/05 09:30 | Keisuke Numajiri v Marc Sieber | 0-6,2-6 |
| ITF - Türkei F17 | 2016/05/01 11:00 | Marc Sieber v Christopher Heyman | 6-3,6-0 |
| ITF - Türkei F17 | 2016/04/30 11:00 | Ryota Kishi v Marc Sieber | 0-6,5-7 |
| ITF - Türkei F17 | 2016/04/29 11:00 | Remi Boutillier v Marc Sieber | 6-7,1-6 |
| ITF - Türkei F17 | 2016/04/28 08:00 | Issei Okamura v Marc Sieber | 7-5,2-6,0-6 |
| ITF - Türkei F17 | 2016/04/26 11:20 | Katsuki Nagao v Marc Sieber | 2-6,1-6 |
| ITF - Türkei F15 | 2016/04/17 09:00 | Marc Sieber v Cem Ilkel | 2-6,6-4,6-4 |
| ITF - Türkei F15 | 2016/04/15 08:00 | David Pichler v Marc Sieber | 4-6,1-6 |