Round: 44 Ground: Hardcourt outdoor
| ITF Turkey F18 | 2018/05/06 07:30 | Horst Rieder v Leonid Mazo | 6-2,6-1 |
| ITF Italy F7 Qual | 2018/04/09 11:00 | Horst Rieder v Remy Bertola | 1-6,4-6 |
| ITF Italy F7 Qual | 2018/04/07 12:00 | Horst Rieder v Moritz Trocker | 7-5,3-6,6-4 |
| ITF Italy F6 Qual | 2018/04/01 16:00 | Nicolo Turchetti v Horst Rieder | 6-2,6-4 |
| ITF Croatia F3 | 2018/03/20 09:00 | Tom Kocevar-Desman v Horst Rieder | 6-2,6-1 |
| ITF Croatia F3 | 2018/03/18 08:00 | Mateo Bubalo v Horst Rieder | 3-6,2-6 |
| ITF Italy F3 Qual | 2018/03/12 19:30 | Tommaso Gabrieli v Horst Rieder | 7-5,7-5 |
| ITF Italy F2 | 2018/03/08 12:30 | Horst Rieder v Lorenzo Giustino | 3-6,0-6 |
| ITF Turkey F18 | 2018/05/05 08:00 | Luka Matic v Edoardo Bottino | 1-6,2-6 |
| ITF Croatia F3 | 2018/03/19 14:00 | Edoardo Bottino v Edoardo Sardella | 2-6,6-4,3-6 |
| ITF Tunisia F34 | 2017/11/04 08:30 | Edoardo Bottino v Pedro Munafo | 3-6,1-6 |