Stadium: Court 2 Round: 26 Ground: Clay
| ITF Germany F11 | 2016/08/17 12:00 | Guenther, Valentin v Boehler, Dominik | 1-6,3-6 |
| ITF Germany F4 | 2018/06/20 13:50 | Boehler, Dominik v Freimuth, Jesper Tull | 6-0,6-4 |
| ITF Croatia F1 | 2018/03/07 08:00 | Boehler, Dominik v Ragazzi, Alessandro | 3-6,1-6 |
| ITF Croatia F1 | 2018/03/04 13:00 | Boehler, Dominik v Khunarikov, Ruslan | 6-3,6-1 |
| ITF Switzerland F1 | 2018/02/06 13:40 | Daniel Masur v Boehler, Dominik | 6-2,6-1 |
| ITF Germany F3 Qual | 2018/01/29 16:30 | Boehler, Dominik v Kai Lemstra | 7-6,7-6 |
| ITF Germany F3 Qual | 2018/01/28 16:00 | Boehler, Dominik v Quinti, Adriano | 6-2,6-1 |
| ITF Germany F2 | 2018/01/26 18:30 | Kern, Robin v Boehler, Dominik | 7-5,6-4 |
| ITF Germany F2 | 2018/01/25 11:45 | Boehler, Dominik v Lukas Klein | 6-4,6-1 |
| ITF Germany F4 | 2018/06/19 14:35 | Guenther, Valentin v Hoeveler, Leon | 6-3,6-2 |
| ITF Turkey F21 | 2018/05/29 09:10 | Mats Rosenkranz v Guenther, Valentin | 6-0,3-6,6-4 |
| Turkey F20, Singles Qualifying | 2018/05/24 07:30 | Paul Woerner v Guenther, Valentin | 6-2,6-3 |
| Turkey F20, Singles Qualifying | 2018/05/23 07:30 | Louroi Martinez v Guenther, Valentin | 2-6,0-6 |
| ITF Turkey F19 | 2018/05/15 08:25 | Koray Kirci v Guenther, Valentin | 7-5,6-3 |
| Egypt F14, Singles Qualifying | 2018/04/19 08:00 | Guenther, Valentin v Vivero Gonzalez, Pablo | 2-6,6-7 |
| Egypt F14, Singles Qualifying | 2018/04/18 08:00 | Vigani, Joy v Guenther, Valentin | 3-6,4-6 |
| ITF Egypt F13 | 2018/04/09 08:30 | Khotkov, Oleg v Guenther, Valentin | 2-6,6-3,7-6 |