Round: 44 Ground: Hardcourt outdoor
| ITF Germany F13 | 2018/08/19 08:00 | Prechtel, Sebastian v Patrick Zahraj | 3-6,0-6 |
| ITF Germany F12 | 2018/08/14 10:00 | Statzberger, Thomas v Prechtel, Sebastian | 3-6,6-3,6-2 |
| Challenger Pullach Qual | 2018/08/04 15:05 | Ymer, Mikael v Prechtel, Sebastian | 6-4,7-5 |
| ITF Bosnia and Herzegovina F2 | 2018/05/23 10:50 | Prechtel, Sebastian v Celebic, Ljubomir | 7-5,4-6,3-6 |
| Turkey F17, Singles Qualifying | 2018/05/01 13:15 | Voinea, Christian v Prechtel, Sebastian | 3-6,6-3,7-5 |
| Turkey F16, Singles Qualifying | 2018/04/24 09:20 | Prechtel, Sebastian v Giacalone, Omar | 6-4,2-6,0-6 |
| Turkey F16, Singles Qualifying | 2018/04/23 07:30 | Prechtel, Sebastian v Cengiz Aksu | 1-6,6-4,7-5 |
| Turkey F16, Singles Qualifying | 2018/04/22 07:30 | Prechtel, Sebastian v Yulik, Viacheslav | 6-2,6-2 |
| ITF Romania F13 | 2018/09/09 10:00 | Walder, Jordi v Ramazzoti, Samuele | 0-6,2-6 |
| ITF Germany F13 | 2018/08/22 08:00 | Peter Heller v Walder, Jordi | 7-6,6-3 |
| ITF Germany F13 | 2018/08/20 09:00 | Kai Lemstra v Walder, Jordi | 3-6,6-1,3-6 |
| ITF Germany F13 | 2018/08/19 08:00 | Walder, Jim v Walder, Jordi | 0-6,6-2,1-6 |
| ITF Germany F5 | 2018/06/24 15:00 | Karlo Cubelic v Walder, Jordi | 7-5,3-6,6-2 |
| ITF Germany F4 | 2018/06/17 12:00 | Krohn, Linus v Walder, Jordi | 6-3,6-4 |
| ITF Germany F4 | 2018/06/16 08:00 | Kapric, Denis v Walder, Jordi | 7-6,5-7,4-6 |
| ITF Germany F1 | 2018/01/07 15:00 | Novotny, David v Walder, Jordi | 6-2,6-2 |