Stadium: Court 1 Oberhaching Round: 26 Ground: Carpet indoor
| ITF Turkey F44 | 2016/11/02 07:00 | Francesco Ferrari v Marc Sieber | 2-6,2-6 |
| ITF Germany F14 | 2018/10/02 12:40 | Francesco Ferrari v Patric Prinoth | 7-6,6-0 |
| ITF Sweden F4 | 2018/09/24 14:05 | Francesco Ferrari v Markus Eriksson | 3-6,6-0,4-6 |
| ITF Canada F7 | 2018/09/11 18:35 | Francesco Ferrari v Harrison Adams | 6-2,2-6,4-6 |
| ITF Canada F6 | 2018/09/06 16:35 | Francesco Ferrari v Felix Corwin | 2-6,6-2,6-7 |
| ITF Canada F6 | 2018/09/05 14:00 | Takuto Niki v Francesco Ferrari | 1-6,7-6,3-6 |
| ITF Canada F6 | 2018/09/03 15:20 | Francesco Ferrari v Ilya Tiraspolsky | 1-6,6-2,6-3 |
| ITF Canada F6 | 2018/09/02 15:00 | Francesco Ferrari v Jody Turnquest | 6-0,6-1 |
| ITF Canada F6 | 2018/09/01 15:00 | Francesco Ferrari v Daniel Fainblum | 5-7,6-4,7-6 |
| ITF Germany F14 | 2018/10/02 10:00 | Max Wiskandt v Marc Sieber | 2-6,0-6 |
| ITF Germany F14 | 2018/10/01 10:00 | Marc Sieber v Henry V-D Schulenburg | 6-1,6-2 |
| ITF Germany F14 | 2018/09/30 11:30 | Marc Sieber v Patrick Nystroem | 6-1,7-5 |
| Challenger Sibiu Qual | 2018/09/16 12:00 | Nicolae Frunza v Marc Sieber | 6-4,6-3 |
| Challenger Seville | 2018/09/01 16:00 | Marc Sieber v Bernabe Zapata Miralles | 6-7,3-6 |
| Challenger Mallorca | 2018/08/26 11:30 | Federico Zeballos v Marc Sieber | 3-6,6-1,6-3 |
| Challenger Meerbusch | 2018/08/14 12:30 | Marc Sieber v Johan Sebastien Tatlot | 6-7,6-4,4-6 |
| Challenger Meerbusch Qual | 2018/08/13 09:00 | Tristan Lamasine v Marc Sieber | 6-7,5-7 |