Stadium: Court 1 Round: 26 Ground: Clay
| ITF Austria F5 | 2017/08/02 08:00 | Lukas Ollert v Matthias Haim | 4-6,6-7 |
| ITF Greece F2 | 2018/03/07 10:00 | Andres Artunedo Martinavarr v Matthias Haim | 6-3,6-1 |
| ITF Greece F1 | 2018/03/01 09:30 | Matthias Haim v Luke Johnson | 6-4,2-6,6-7 |
| ITF Greece F1 | 2018/02/28 10:00 | Matthias Haim v Jeffrey Schorsch | 6-4,6-4 |
| ITF Great Britain F2 | 2018/02/09 10:00 | Harri Heliovaara v Matthias Haim | 7-5,6-1 |
| ITF Great Britain F2 | 2018/02/08 13:35 | Matthias Haim v David Pichler | 3-6,6-3,6-1 |
| ITF Great Britain F2 | 2018/02/07 13:55 | Marcus Willis v Matthias Haim | 4-6,4-6 |
| ITF Great Britain F1 | 2018/01/30 11:45 | Scott Griekspoor v Matthias Haim | 6-2,2-6,6-4 |
| ITF Dominican Republic F3 | 2017/12/13 13:30 | Carlos Boluda-Purkiss v Matthias Haim | 3-6,6-3,6-4 |
| ITF Russia F3 | 2018/03/14 10:55 | Roman Safiullin v Lukas Ollert | 6-2,6-1 |
| ITF Russia F3 | 2018/03/13 10:20 | Gary Kushnirovich v Lukas Ollert | 0-6,6-7 |
| ITF Kazakhstan F2 | 2018/02/21 07:35 | Nikola Milojevic v Lukas Ollert | 6-7,6-3,6-4 |
| ITF Kazakhstan F2 | 2018/02/20 07:05 | Artem Dubrivnyy v Lukas Ollert | 6-7,5-7 |
| ITF Kazakhstan F1 | 2018/02/16 06:40 | Lukas Ollert v Mikhail Fufygin | 3-6,4-6 |
| ITF Kazakhstan F1 Qual | 2018/02/15 06:00 | Timur Khabibulin v Lukas Ollert | 3-6,0-6 |
| ITF Kazakhstan F1 | 2018/02/14 06:15 | Lukas Ollert v Dzmitry Zhyrmont | 6-3,6-1 |
| ITF Kazakhstan F1 | 2018/02/13 05:00 | Lukas Ollert v Pavel Tsoy | 6-4,6-3 |