Stadium: Hard 5 Round: 26 Ground: Hardcourt outdoor
| ITF Greece F8 | 2018/11/13 09:25 | Stefan Seifert v Constantinos Papavasiliou | 6-0,6-1 |
| ITF Germany F16 | 2018/10/25 12:45 | Stefan Seifert v Evgeny Tyurnev | 5-7,4-6 |
| ITF Germany F16 | 2018/10/24 10:00 | Artem Dubrivnyy v Stefan Seifert | 6-2,5-7,1-6 |
| ITF Germany F16 | 2018/10/23 13:00 | Stefan Seifert v Johann Willems | 4-6,6-3,6-2 |
| 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 Greece F8 | 2018/11/13 07:30 | Austin Rapp v Jordan Hasson | 1-6,7-5,6-1 |
| ITF Greece F8 | 2018/11/12 07:30 | Stefan Petrovic v Austin Rapp | 6-7,4-6 |
| ITF Greece F8 | 2018/11/11 08:00 | Marvin Rehberg v Austin Rapp | 2-6,6-4,3-6 |
| ITF Greece F8 | 2018/11/10 10:00 | Radoslav Shandarov v Austin Rapp | 1-6,3-6 |
| ITF Greece F7 | 2018/11/07 09:25 | Tom Kocevar-Desman v Austin Rapp | 7-6,6-2 |
| ITF Greece F7 | 2018/11/05 07:30 | Austin Rapp v Alexandre Peyrot | 6-4,5-7,6-3 |
| ITF Greece F7 | 2018/11/04 08:00 | Austin Rapp v Michalis Sakellaridis | 6-1,6-3 |
| ITF Greece F7 | 2018/11/03 10:00 | Filippo Moroni v Austin Rapp | 5-7,2-6 |