Stadium: Campo 3 Round: 54 Ground: Clay
| Challenger Rome Qual | 2018/05/06 10:50 | Kimmer Coppejans v Haider-Maurer, Andreas | 6-7,6-4,4-6 |
| Challenger Rome Qual | 2018/05/05 12:05 | Giallanza, Andrea v Haider-Maurer, Andreas | 1-6,1-6 |
| ATP - Munich | 2018/05/01 12:10 | Zverev, Mischa v Haider-Maurer, Andreas | 6-4,6-3 |
| ATP - Barcelone | 2018/04/24 09:00 | Haider-Maurer, Andreas v Roberto Carballes Baena | 2-6,4-6 |
| Challenger Barletta Qual | 2018/04/08 09:00 | Zsombor Piros v Haider-Maurer, Andreas | 6-3,7-6 |
| Challenger Barletta Qual | 2018/04/07 08:00 | Semmler, Miguel v Haider-Maurer, Andreas | 4-6,5-7 |
| Challenger Marbella Qual | 2018/03/24 13:00 | Esteve Lobato, Eduard v Haider-Maurer, Andreas | 6-3,7-5 |
| ATP - Dubaï | 2018/02/27 10:00 | Haider-Maurer, Andreas v Jan-Lennard Struff | 2-6,4-6 |
| Challenger Rome Qual | 2018/05/06 11:40 | Enrico Dalla Valle v Heras, Patricio | 4-6,4-6 |
| Challenger Rome Qual | 2018/05/05 10:30 | Draganja, Tomislav v Heras, Patricio | 3-6,4-6 |
| Challenger Ostrava Qual | 2018/04/30 09:00 | Evan Furness v Heras, Patricio | 7-6,6-4 |
| Challenger Ostrava Qual | 2018/04/29 09:00 | Stanek, Robin v Heras, Patricio | 2-6,4-6 |
| Challenger Ostrava Qual | 2018/04/28 10:05 | David Poljak v Heras, Patricio | 3-6,3-6 |
| ITF Spain F10 | 2018/04/23 11:10 | Vivero Gonzalez, Pablo v Heras, Patricio | 6-4,0-6,7-6 |
| ITF Spain F9 | 2018/04/20 09:30 | Heras, Patricio v Marti, Javier | 5-7,3-6 |
| ITF Spain F9 | 2018/04/19 09:00 | Heras, Patricio v Nicolas Alvarez Varona | 6-7,6-3,6-2 |