Round: 25 Ground: Clay
| 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 Turkey F19 Qual | 2017/05/15 07:00 | Valentin Guenther v Juan Bautista Otegui | 3-6,3-6 |
| ITF Turkey F19 Qual | 2017/05/14 07:00 | Lance-Pierre Du Toit v Valentin Guenther | 5-7,0-6 |
| ITF Turkey F19 Qual | 2017/05/13 07:00 | Valentin Guenther v Burak Bilgin | 6-2,6-2 |
| ITF Turkey F18 | 2017/05/11 07:00 | Robin Stanek v Valentin Guenther | 6-4,7-6 |
| ITF Turkey F18 | 2017/05/08 07:00 | Alexander Babanine v Valentin Guenther | 3-6,3-6 |
| ITF Germany F4 | 2017/06/19 11:00 | Arnd Weyhausen v Niclas Braun | 2-6,6-4,3-6 |
| ITF USA F37 | 2016/11/12 16:00 | Axel Nefve v Niclas Braun | 7-6,6-3 |
| ITF USA F37 | 2016/11/11 14:30 | Niclas Braun v Ryan Peniston | 6-0,6-1 |
| ITF USA F35 | 2016/11/01 21:05 | Niclas Braun v Lukas Ollert | 0-6,6-4,0-6 |
| ITF USA F35 | 2016/10/31 15:00 | Niclas Braun v Grayson M. Goldin | 6-0,6-4 |
| ITF USA F35 | 2016/10/30 15:00 | Emil Reinberg v Niclas Braun | 6-3,6-7,2-6 |
| ITF USA F35 | 2016/10/28 14:30 | Niclas Braun v Rana-Roop Singh Bhullar | 6-3,6-2 |
| ITF Germany F4 | 2016/06/22 15:10 | Yannick Maden v Niclas Braun | 6-0,6-2 |