Stadium: Court 1 Round: 25 Ground: Clay
| ITF Austria F2 | 2018/07/09 09:00 | Jorge Panta v Gabriel Huber | 6-2,4-6,6-3 |
| ITF Austria F1 | 2018/06/30 09:30 | Gabriel Huber v Martins Rocens | 2-6,4-6 |
| ITF Croatia F3 | 2018/03/18 14:00 | Tom Kocevar-Desman v Gabriel Huber | 6-0,6-1 |
| ITF Croatia F3 | 2018/03/18 08:30 | Gabriel Huber v Ruslan Khunarikov | 7-5,6-4 |
| ITF Austria F2 | 2018/07/14 12:00 | Nerman Fatic v Johannes Haerteis | 1-6,6-3,6-1 |
| ITF Austria F2 | 2018/07/13 12:40 | Johannes Haerteis v Eduardo Dischinger | 6-1,1-6,6-3 |
| ITF Austria F2 | 2018/07/12 11:15 | Alexandar Lazarov v Johannes Haerteis | 3-6,2-6 |
| ITF Austria F2 | 2018/07/11 09:00 | Alexander Weis v Johannes Haerteis | 2-6,6-4,6-7 |
| ITF Austria F2 | 2018/07/09 12:00 | Johannes Haerteis v Jonathan Stenberg | 6-1,7-5 |
| Challenger Marburg Qual | 2018/06/30 12:40 | Johannes Haerteis v Daniel Masur | 4-6,4-6 |
| Challenger L'Aquila | 2018/06/19 10:00 | Johannes Haerteis v Riccardo Balzerani | 6-4,2-6,4-6 |
| Challenger L'Aquila Qual | 2018/06/18 09:55 | Zhizhen Zhang v Johannes Haerteis | 5-7,6-7 |