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