Round: 25 Ground: Carpet indoor
| ITF Germany F3 | 2017/01/23 11:30 | Johannes Haerteis v Rudolf Molleker | 6-4,6-3 |
| ITF Germany F3 | 2017/01/23 08:30 | Johannes Haerteis v Robin Lang | 7-5,6-3 |
| ITF Germany F2 | 2017/01/18 15:45 | Rudolf Molleker v Johannes Haerteis | 4-6,6-4,6-4 |
| ITF Germany F1 | 2017/01/11 18:15 | Johannes Haerteis v Patrik Rosenholm | 4-6,5-7 |
| ITF Germany F1 | 2017/01/11 08:00 | Johannes Haerteis v Patrik Rosenholm | 4-6,5-7 |
| ITF Germany F12 | 2016/08/25 09:45 | Jean-Marc Werner v Johannes Haerteis | 6-3,6-3 |
| ITF Germany F12 | 2016/08/24 12:30 | Johannes Haerteis v Robin Kern | 6-3,6-4 |
| ITF Germany F11 | 2016/08/19 12:10 | Andreas Beck v Johannes Haerteis | 6-1,6-1 |
| Challenger - Andria | 2016/11/24 10:00 | Laurynas Grigelis v Stefanos Tsitsipas | 6-7,6-4,3-6 |
| Challenger - Andria | 2016/11/23 11:40 | Laurynas Grigelis v Peter Torebko | 6-4,6-4 |
| Challenger Brescia | 2016/11/20 16:00 | Luca Vanni v Laurynas Grigelis | 6-7,6-4,7-6 |
| Challenger Brescia | 2016/11/19 14:00 | Salvatore Caruso v Laurynas Grigelis | 4-6,4-6 |
| Challenger Brescia | 2016/11/17 21:05 | Leonardo Mayer v Laurynas Grigelis | 6-3,6-7,5-7 |
| Challenger Brescia | 2016/11/16 11:50 | Laurynas Grigelis v Andrea Arnaboldi | 3-6,6-3,7-6 |
| Challenger Brescia Qual | 2016/11/14 11:30 | Egor Gerasimov v Laurynas Grigelis | 6-1,6-2 |
| Challenger Brescia Qual | 2016/11/13 12:10 | Andriej Kapas v Laurynas Grigelis | 6-7,6-7 |