Stadium: Court 3 Round: 54 Ground: Hardcourt indoor
| ITF Czech Republic F10 | 2018/11/13 11:00 | Aichhorn, Jakob v Piotr Grynkowski | 6-3,6-0 |
| ITF Czech Republic F10 | 2018/11/13 11:00 | Aichhorn, Jakob v Piotr Grynkowski | 6-3,6-0 |
| ITF Czech Republic F10 | 2018/11/12 09:00 | Samuel Puskar v Piotr Grynkowski | 6-7,7-5,2-6 |
| ITF Czech Republic F8 | 2018/10/30 09:00 | Piotr Grynkowski v Ivan Marrero Curbelo | 7-6,6-3 |
| ITF Czech Republic F8 | 2018/10/29 12:00 | Marcell Bartakovics v Piotr Grynkowski | 3-6,3-6 |
| ITF Czech Republic F7 | 2018/10/24 08:00 | Piotr Grynkowski v Mertl, Jan | 7-6,3-6,3-6 |
| ITF Czech Republic F7 | 2018/10/23 11:10 | Kai Lemstra v Piotr Grynkowski | 4-6,6-1,4-6 |
| ITF Czech Republic F7 | 2018/10/22 13:00 | Vrba, Daniel v Piotr Grynkowski | 6-4,4-6,3-6 |
| ITF Germany F15 | 2018/10/11 13:50 | Matsukevitch, Denis v Piotr Grynkowski | 6-4,6-2 |
| ITF Czech Republic F10 | 2018/11/15 10:35 | Aichhorn, Jakob v Christoph Negritu | 2-6,1-6 |
| ITF Czech Republic F10 | 2018/11/14 16:45 | Mammetgulyyev, Isa v Aichhorn, Jakob | 6-7,3-6 |
| ITF Czech Republic F10 | 2018/11/13 11:00 | Aichhorn, Jakob v Piotr Grynkowski | 6-3,6-0 |
| ITF Czech Republic F10 | 2018/11/12 13:00 | Aichhorn, Jakob v Podlesak, Marek | 4-6,6-1,6-1 |
| ITF Germany F14 | 2018/10/03 11:35 | Aichhorn, Jakob v Guenther, Valentin | 3-6,2-6 |
| ITF Italy F26 | 2018/09/01 08:30 | Aichhorn, Jakob v Nystroem, Patrick | 2-6,4-6 |
| ITF Germany F13 | 2018/08/22 13:00 | Aichhorn, Jakob v Torebko, Peter | 0-6,2-6 |
| ITF Germany F13 | 2018/08/20 13:00 | Schulte, Rene v Aichhorn, Jakob | 6-4,6-2 |