Round: 44 Ground: Hardcourt indoor
| ITF Germany F14 | 2017/10/11 16:00 | Daniel Masur v Haerteis, Johannes | 7-6,6-3 |
| ITF Germany F14 | 2017/10/09 10:00 | Haerteis, Johannes v Lemstra, Sven | 6-3,6-1 |
| ITF Germany F14 | 2017/10/08 11:30 | Haerteis, Johannes v Cadonau, Jakob | 6-1,6-2 |
| France F19, Singles | 2017/09/13 08:00 | Haerteis, Johannes v Authom, Maxime | 4-6,4-6 |
| ITF Germany F12 | 2017/08/23 09:30 | Torebko, Peter v Haerteis, Johannes | 7-6,6-3 |
| ITF Germany F10 | 2017/08/08 09:00 | Haerteis, Johannes v Boehler, Dominik | 6-4,4-6,2-6 |
| ITF Germany F9 | 2017/08/01 10:50 | Haerteis, Johannes v Elmar Ejupovic | 6-7,3-6 |
| ITF Austria F3 | 2017/07/20 10:00 | Viktor Durasovic v Haerteis, Johannes | 4-6,6-4,7-6 |
| ITF Germany F15 | 2017/10/15 07:00 | Markiewicz, James v Herzgerodt, Ingo | 6-7,3-6 |
| ITF Germany F16 | 2016/10/23 07:30 | Garcia, Nicholas v Herzgerodt, Ingo | 7-5,6-3 |
| ITF Turkey F29 | 2014/08/24 07:00 | Herzgerodt, Ingo v Lizen, Aswin | 4-6,1-6 |