Round: 62 Ground: Clay
| ITF Croatia F3 | 2017/03/19 12:00 | Darko Bojanovic v Sebastian Prechtel | 7-5,2-6,6-1 |
| ITF Croatia F3 | 2017/03/19 08:30 | David Gorsic v Sebastian Prechtel | 3-6,1-6 |
| ITF Croatia F2 | 2017/03/11 08:00 | Sebastian Prechtel v Jurij Rodionov | 3-6,3-6 |
| ITF Croatia F1 | 2017/03/08 12:20 | Maciej Rajski v Sebastian Prechtel | 6-1,6-0 |
| ITF Croatia F1 | 2017/03/06 12:00 | Sebastian Prechtel v Jakob Johansson-Holm | 6-4,2-6,6-0 |
| ITF Croatia F1 | 2017/03/05 08:00 | Sebastian Prechtel v Andrea Borroni | 6-4,6-2 |
| ITF Germany F3 | 2017/01/23 19:40 | Elmar Ejupovic v Sebastian Prechtel | 6-2,6-2 |
| ITF Germany F3 | 2017/01/23 11:30 | Patrik Hartmeier v Sebastian Prechtel | 4-6,4-6 |
| ITF Greece F4 | 2017/03/25 09:30 | Valentin Guenther v Andrea Bolla | 6-4,4-6,4-6 |
| ITF Greece F3 | 2017/03/21 09:25 | Benjamin Bonzi v Valentin Guenther | 6-4,5-7,6-0 |
| ITF Greece F3 | 2017/03/20 07:30 | Valentin Guenther v Imran Aswat | 6-3,6-2 |
| ITF Greece F3 | 2017/03/19 10:00 | Sergei Pogosian v Valentin Guenther | 4-6,1-6 |
| ITF Greece F2 Qual | 2017/03/11 10:00 | Petar Conkic v Valentin Guenther | 6-2,6-2 |
| ITF Switzerland F1 Qual | 2017/02/05 11:30 | Valentin Guenther v Ugo Humbert | 6-3,3-6,2-6 |
| 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 |