Stadium: Center Court Round: 25 Ground: Clay
| ITF Portugal F12 | 2018/07/27 11:30 | Nuno Borges v Tobias Simon | 6-7,6-2,6-4 |
| ITF Portugal F12 | 2018/07/26 15:00 | Simon Carr v Tobias Simon | 4-6,3-6 |
| ITF Portugal F12 | 2018/07/25 14:50 | Daniel Batista v Tobias Simon | 4-6,3-6 |
| Challenger Nottingham | 2018/06/12 14:30 | James Ward v Tobias Simon | 6-4,6-7,7-6 |
| Challenger Nottingham Qual | 2018/06/11 10:00 | Christopher Eubanks v Tobias Simon | 3-6,7-6,6-7 |
| Challenger Nottingham Qual | 2018/06/10 10:00 | Alexis Canter v Tobias Simon | 1-6,2-6 |
| Challenger Nottingham Qual | 2018/06/09 10:00 | Adam Jones v Tobias Simon | 3-6,4-6 |
| ITF Romania F2 | 2018/05/30 10:45 | Tobias Simon v Marko Tepavac | 2-6,3-6 |
| ITF Italy F21 Qual | 2018/07/28 17:40 | Jonas Greif v Horst Rieder | 1-6,4-6 |
| ITF Austria F4 Qual | 2018/07/22 08:00 | Yvo Panak v Horst Rieder | 6-2,6-0 |
| ITF Austria F4 Qual | 2018/07/21 10:00 | Carlos Kelaidis v Horst Rieder | 3-6,6-3,3-6 |
| ITF Italy F19 | 2018/07/14 08:30 | Andrea Grazioso v Horst Rieder | 6-4,6-1 |
| ITF Austria F2 | 2018/07/07 08:00 | Horst Rieder v Alexey Aleshchev | 2-6,0-6 |
| ITF Austria F2 | 2018/07/07 07:15 | Bjorn Nareyka v Horst Rieder | 2-6,4-6 |
| ITF Turkey F19 | 2018/05/15 08:20 | Horst Rieder v Francois-Arthur Vibert | 4-6,1-6 |
| ITF Turkey F19 Qual | 2018/05/14 07:30 | Joel Cannell v Horst Rieder | 4-6,7-6,6-4 |