Stadium: Court 1 Round: 27 Ground: Clay
| ITF Germany F12 | 2017/08/25 11:00 | Peter Heller v Matthias Haim | 3-6,1-6 |
| ITF Germany F13 | 2018/08/23 08:00 | Peter Heller v Johannes Haerteis | 6-1,6-0 |
| ITF Germany F13 | 2018/08/22 08:00 | Peter Heller v Jordi Walder | 7-6,6-3 |
| ITF Italy F23 | 2018/08/18 09:00 | Peter Heller v Jannik Sinner | 6-1,6-3 |
| ITF Italy F23 | 2018/08/17 09:00 | Peter Heller v Alexander Weis | 4-6,6-3,6-4 |
| ITF Italy F23 | 2018/08/16 09:00 | Peter Heller v Maxime Mora | 3-6,6-3,6-4 |
| ITF Italy F23 | 2018/08/15 07:30 | Peter Heller v Ignacio Monzon | 6-2,6-0 |
| ITF Italy F23 | 2018/08/14 10:15 | Peter Heller v Andres Gabriel Ciurletti | 6-2,6-0 |
| ITF Austria F4 | 2018/07/28 08:30 | Peter Heller v Thomas Statzberger | 7-5,6-2 |
| ITF Germany F13 | 2018/08/23 11:45 | Patrick Zahraj v Matthias Haim | 3-6,4-6 |
| ITF Germany F13 | 2018/08/22 15:10 | Paul Woerner v Matthias Haim | 4-6,1-6 |
| ITF Germany F13 | 2018/08/20 09:00 | Matthias Haim v Leon Hoeveler | 6-1,6-2 |
| ITF Germany F13 | 2018/08/19 14:00 | Matthias Haim v Sven Lemstra | 6-2,6-1 |
| Challenger Cordenons | 2018/08/11 10:30 | Elmar Ejupovic v Matthias Haim | 6-2,6-2 |
| ATP Kitzbuhel Qual | 2018/07/28 12:10 | Matthias Haim v Lorenzo Sonego | 7-6,3-6,4-6 |
| ITF Austria F4 | 2018/07/27 09:00 | Matthias Haim v Thomas Statzberger | 1-6,0-6 |
| ITF Austria F4 | 2018/07/26 09:00 | Alexander Erler v Matthias Haim | 4-6,2-6 |