Round: 27 Ground: Hardcourt outdoor
| ITF Turkey F38 | 2015/09/24 17:00 | Peter Heller v Delf Gohlke | 6-3,6-1 |
| ITF Turkey F38 | 2015/09/22 12:00 | Peter Heller v Jarryd Chaplin | 6-1,6-2 |
| ITF Turkey F37 | 2015/09/19 13:00 | Alexander Boborykin v Peter Heller | 6-4,6-3 |
| ITF Turkey F37 | 2015/09/18 13:00 | Weiqiang Zheng v Peter Heller | 6-7,3-6 |
| ITF Turkey F37 | 2015/09/17 16:40 | Sagadat Ayap v Peter Heller | 4-6,2-6 |
| ITF Turkey F37 | 2015/09/16 13:00 | Collin Johns v Peter Heller | 1-6,6-3,3-6 |
| ITF Germany F13 | 2015/08/26 09:40 | Laslo Urrutia Fuentes v Peter Heller | 7-6,6-3 |
| ITF Germany F11 | 2015/08/14 12:00 | Yannick Hanfmann v Peter Heller | 3-6,6-2,6-3 |
| ITF Turkey F38 | 2015/09/24 14:30 | Ken Onishi v Sefa Suluoglu | 6-1,2-6,7-5 |
| ITF Turkey F38 | 2015/09/23 14:40 | Shunrou Takeshima v Ken Onishi | 2-6,2-6 |
| ITF Turkey F38 | 2015/09/21 12:00 | Ken Onishi v Johannes Ingildsen | 6-4,6-4 |
| ITF Turkey F37 | 2015/09/14 13:00 | Ken Onishi v Michal Bisko | 4-6,5-7 |
| ITF Turkey F37 | 2015/09/13 14:00 | Ken Onishi v Edward Harwood | 6-0,6-0 |
| ITF China F9 | 2015/06/30 08:00 | Zhuoyang Qiu v Ken Onishi | 6-3,6-2 |
| ITF Thailand F9 | 2015/06/23 06:40 | Issei Okamura v Ken Onishi | 6-4,2-6,6-1 |
| ITF Thailand F9 | 2015/06/17 03:30 | Ken Onishi v Shuichi Sekiguchi | 3-6,3-6 |