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