Stadium: Court 3 Round: 25 Ground: Carpet indoor
| ITF Germany F15 | 2018/10/12 15:45 | Stefan Seifert v Vadym Ursu | 3-6,1-6 |
| ITF Germany F15 | 2018/10/11 15:25 | Stefan Seifert v Karlo Cubelic | 6-4,6-7,6-2 |
| ITF Germany F15 | 2018/10/10 16:45 | Stefan Seifert v Piotr Galus | 6-1,6-2 |
| ITF Germany F11 | 2018/08/07 09:00 | Constantin Schmitz v Stefan Seifert | 7-5,2-6,6-2 |
| ITF Ireland F1 | 2018/08/04 12:45 | Stefan Seifert v Ryan James Storrie | 3-6,7-6,3-6 |
| ITF Ireland F1 | 2018/08/03 13:15 | George Botezan v Stefan Seifert | 5-7,0-6 |
| ITF Ireland F1 | 2018/08/02 13:05 | Daniil Zarichanskiy v Stefan Seifert | 2-6,1-6 |
| ITF Ireland F1 | 2018/07/31 14:20 | Michael Shaw v Stefan Seifert | 7-6,4-6,3-6 |
| ITF Germany F16 | 2018/10/22 10:00 | Johann Willems v Karlo Cubelic | 6-3,6-4 |
| ITF Germany F16 | 2018/10/21 10:30 | Johann Willems v Herman Meeuwes Mattheo Knoop | 6-4,6-3 |
| ITF Germany F5 | 2018/06/28 14:15 | Markus Eriksson v Johann Willems | 6-3,6-0 |
| ITF Germany F5 | 2018/06/26 15:20 | Gibril Diarra v Johann Willems | 1-6,2-6 |
| ITF Romania F1 | 2018/05/22 07:00 | Matthias Haim v Johann Willems | 7-6,7-6 |
| ITF Egypt F16 | 2018/05/02 12:00 | Johann Willems v Zakhar Trapeznikov | 7-5,5-7,6-7 |
| ITF Egypt F16 | 2018/04/30 07:30 | Johann Willems v Vladislav Dubinsky | 6-2,6-4 |
| ITF Egypt F16 | 2018/04/29 08:00 | Johann Willems v Sebastiano M Zorzi | 6-1,6-2 |