Stadium: Court 3 Round: 44 Ground: Carpet indoor
| ITF Germany F2 Qual | 2018/01/21 08:30 | Tim Heger v Justin Boulais | 6-7,7-5,6-1 |
| ITF Germany F1 | 2018/01/07 11:30 | Tim Heger v Kai Lemstra | 4-6,4-6 |
| ITF Germany F1 | 2018/01/07 08:00 | Erwin Troebinger v Tim Heger | 3-6,4-6 |
| ITF Germany F12 | 2017/08/22 09:20 | Jordi Walder v Tim Heger | 6-3,6-4 |
| ITF Germany F11 | 2017/08/15 10:30 | Tim Heger v Peter Heller | 1-6,4-6 |
| ITF Germany F3 | 2017/01/24 10:00 | Alexey Vatutin v Tim Heger | 6-3,6-1 |
| ITF Germany F17 | 2016/10/31 09:00 | Mick Veldheer v Tim Heger | 6-0,6-3 |
| ITF Germany F17 | 2016/10/30 11:00 | Niklas Albuszies v Tim Heger | 6-7,6-2,5-7 |
| ITF Germany F1 | 2018/01/08 09:00 | Jonathan Chang v Jakob Aichhorn | 2-6,3-6 |
| ITF Dominican Republic F1 | 2017/11/27 13:00 | Jonathan Chang v Lukas Greif | 6-3,4-6,0-6 |
| ITF USA F37 | 2017/11/17 18:15 | Jonathan Chang v Nuno Borges | 2-6,2-6 |
| ITF USA F37 | 2017/11/16 16:00 | Harrison Adams v Jonathan Chang | 0-6,3-6 |
| ITF USA F37 | 2017/11/14 17:50 | Nick Chappell v Jonathan Chang | 6-3,4-6,3-6 |
| ITF USA F36 | 2017/11/04 16:30 | Jonathan Chang v Paul Jubb | 5-7,2-6 |
| ITF USA F36 | 2017/11/03 17:30 | Noah Schachter v Jonathan Chang | 4-6,2-6 |
| ITF USA F35 | 2017/10/29 16:00 | Jonathan Chang v Sergey Belov | 3-6,2-6 |