Round: 25 Ground: Clay
| ITF Belgium F9 | 2015/08/08 13:00 | Joris De Loore v Oscar Otte | 6-4,2-6,3-6 |
| ITF Belgium F9 | 2015/08/06 14:00 | Oscar Otte v Michael Geerts | 6-3,6-2 |
| ITF Belgium F9 | 2015/08/05 11:10 | Oscar Otte v Christopher Heyman | 6-3,6-2 |
| ITF Germany F8 | 2015/07/21 10:45 | Oscar Otte v Robin Kern | 5-7,3-6 |
| ITF Belgium F6 | 2015/07/13 11:00 | Benjamin Dhoe v Oscar Otte | 7-5,6-0 |
| ITF Germany F5 | 2015/07/02 14:25 | Maximilian Marterer v Oscar Otte | 6-4,6-3 |
| ITF Germany F5 | 2015/06/30 11:00 | Tom Schonenberg v Oscar Otte | 2-6,1-6 |
| ITF Belgium F2 | 2015/06/21 12:30 | Tom Schonenberg v Oscar Otte | 5-7,3-6 |
| ITF Austria F2 | 2015/06/30 10:20 | Daniel Altmaier v Mikelis Libietis | 6-7,3-6 |
| ITF Austria F2 | 2015/06/29 08:00 | Daniel Altmaier v Fran Zvonimir Zgombic | 7-6,7-5 |
| ITF Austria F2 | 2015/06/28 08:00 | Daniel Altmaier v Joachim Bjerke | 6-4,6-1 |
| ITF Belgium F2 | 2015/06/16 12:15 | Marcelo Plaza v Daniel Altmaier | 3-6,6-3,6-4 |
| ITF Belgium F1 | 2015/06/09 16:45 | Daniel Altmaier v Alexandre Folie | 4-6,1-6 |
| ITF Czech Republic F2 | 2015/05/20 08:00 | Uladzimir Ignatik v Daniel Altmaier | 6-4,6-2 |
| ITF Italy F6 | 2015/04/21 09:20 | Daniel Altmaier v Scott Griekspoor | 5-7,1-6 |
| ITF Italy F30 | 2015/04/06 09:00 | Daniel Altmaier v Filippo Leonardi | 2-6,1-6 |