Round: 44 Ground: Clay
| ITF Germany F6 | 2017/07/03 12:00 | Tom Schonenberg v Valentin Guenther | 6-4,7-6 |
| ITF Germany F6 | 2017/07/02 13:00 | Robi Tholl v Valentin Guenther | 0-6,1-6 |
| ITF Germany F5 | 2017/06/27 12:40 | Valentin Guenther v Peter Heller | 1-6,4-6 |
| ITF Germany F4 | 2017/06/22 12:00 | Bernabe Zapata Miralles v Valentin Guenther | 6-4,6-1 |
| ITF Germany F4 | 2017/06/21 10:45 | Valentin Guenther v Niclas Braun | 6-0,6-0 |
| ITF Germany F4 | 2017/06/19 11:00 | Alexander Mannapov v Valentin Guenther | 4-6,1-6 |
| ITF Germany F4 | 2017/06/18 14:00 | Yannick Staschen v Valentin Guenther | 2-6,4-6 |
| ITF Germany F4 | 2017/06/17 10:30 | Joel Vincent Link v Valentin Guenther | 1-6,4-6 |
| ITF Germany F8 Qual | 2017/07/16 08:00 | Thomas Schwencke Lindqvist v Marcel Marlon Sudzum | 6-4,6-2 |
| ITF Germany F7 | 2017/07/09 08:00 | Alexey Vatutin v Marcel Marlon Sudzum | 6-0,6-1 |
| ITF Netherlands F2 Qual | 2017/06/24 09:00 | Marcel Marlon Sudzum v Ilco Van Buuren | 2-6,1-6 |
| ITF Netherlands F1 Qual | 2017/06/18 08:00 | Bobbie De Goeijen v Marcel Marlon Sudzum | 6-3,7-6 |
| ITF Czech Republic F3 Qual | 2017/05/27 08:00 | Marcel Marlon Sudzum v Juan Ignacio Alcalde | 3-6,1-6 |
| ITF Czech Republic F2 | 2017/05/20 10:00 | Marko Pasalic v Marcel Marlon Sudzum | 4-6,6-3,6-2 |
| ITF Italy F11 Qual | 2017/04/30 08:00 | Vladimir Filip v Marcel Marlon Sudzum | 6-1,6-1 |
| ITF Italy F10 | 2017/04/22 07:30 | Johannes Bangratz v Marcel Marlon Sudzum | 3-6,6-0,6-3 |