Stadium: Court 4 Round: 44 Ground: Clay
| ITF Austria F4 Qual | 2018/07/21 07:30 | Carlos Kelaidis v Qian Sun | 6-0,7-6 |
| ITF Austria F3 | 2018/07/14 08:00 | Richard Muzaev v Carlos Kelaidis | 7-6,6-2 |
| ITF Austria F3 | 2018/07/14 07:15 | Carlos Kelaidis v Lewie Lane | 6-1,7-6 |
| ITF Austria F2 | 2018/07/08 10:15 | Carlos Kelaidis v Edward Hubner | 3-6,0-6 |
| ITF Austria F2 | 2018/07/07 16:15 | Arturs Lazdins v Carlos Kelaidis | 4-6,2-6 |
| ITF Austria F2 | 2018/07/07 07:15 | Carlos Kelaidis v Stefan Dragovic | 6-2,6-2 |
| ITF Turkey F22 | 2018/06/03 07:30 | Daniil Klimov v Carlos Kelaidis | 1-6,3-6 |
| ITF Turkey F22 | 2018/06/02 07:30 | Carlos Kelaidis v Karl W W Mac-Leay | 6-4,1-6,6-2 |
| 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 |
| ITF Turkey F19 Qual | 2018/05/13 07:30 | Dmytro Ishtuganov v Horst Rieder | 5-7,1-6 |
| ITF Turkey F18 | 2018/05/08 07:30 | Ivan Davydov v Horst Rieder | 3-6,7-6,6-4 |
| ITF Turkey F18 | 2018/05/07 07:30 | Horst Rieder v Edoardo Bottino | 7-5,6-1 |