Round: 25 Ground: Clay
| ITF Germany F3 | 2017/01/23 08:30 | Valentin Guenther v Matvey Khomentovskiy | 5-7,7-6,6-3 |
| ITF Germany F3 | 2017/01/22 11:30 | Moritz Hoffmann v Valentin Guenther | 3-6,7-6,3-6 |
| ITF Germany F2 Qual | 2017/01/15 12:00 | Valentin Guenther v Jannis Kahlke | 3-6,6-7 |
| ITF Germany F1 | 2017/01/10 13:00 | Valentin Guenther v Yaraslav Shyla | 4-6,4-6 |
| ITF Germany F1 Qual | 2017/01/09 14:10 | Jurij Rodionov v Valentin Guenther | 7-6,4-6,4-6 |
| ITF Germany F1 Qual | 2017/01/08 13:00 | Valentin Guenther v Maximilien Sanson | 6-2,6-2 |
| ITF Germany F17 | 2016/11/02 10:00 | Lucas Catarina v Valentin Guenther | 6-4,7-6 |
| ITF Germany F17 | 2016/10/31 09:00 | Jannis Kahlke v Valentin Guenther | 3-6,0-6 |
| Challenger Marburg Qual | 2016/06/26 08:00 | Peter Heller v Sergey Betov | 6-3,3-6,3-6 |
| ITF Germany F4 | 2016/06/23 12:45 | Peter Heller v Kevin Krawietz | 1-6,3-6 |
| ITF Turkey F10 | 2016/03/11 10:20 | Demian Raab v Peter Heller | 1-6,7-5,6-4 |
| ITF Turkey F10 | 2016/03/10 09:25 | Dan Dowson v Peter Heller | 5-7,7-6,3-6 |
| ITF Turkey F10 | 2016/03/09 11:50 | Delf Gohlke v Peter Heller | 0-6,1-6 |
| ITF Israel F3 | 2016/02/26 08:30 | Peter Heller v Julien Dubail | 3-6,6-3,6-7 |
| ITF Israel F3 | 2016/02/25 08:00 | Tal Goldengoren v Peter Heller | 6-3,3-6,2-6 |
| ITF Israel F3 | 2016/02/24 09:20 | Corentin Denolly v Peter Heller | 7-6,4-6,3-6 |