Stadium: 10 Stärk Gartenbau Round: 62 Ground: Clay
| ITF Germany F11 | 2018/08/05 12:00 | Benjamin Hassan v Rehberg, Marvin | 6-3,6-4 |
| ITF Germany F11 | 2018/08/05 08:00 | Rehberg, Marvin v Papavasiliou, Constantinos | 6-1,6-2 |
| ITF Germany F9 | 2018/07/22 11:00 | Erdbories, Tillmann v Rehberg, Marvin | 7-5,6-3 |
| ITF Germany F8 Qual | 2018/07/16 11:55 | Rehberg, Marvin v Daljev, Pavle | 7-5,6-7,3-6 |
| ITF Germany F8 Qual | 2018/07/15 14:30 | Green, Cameron v Rehberg, Marvin | 6-7,1-6 |
| ITF Germany F7 | 2018/07/09 08:00 | Kijametovic, Aziz v Rehberg, Marvin | 6-2,6-1 |
| ITF Germany F7 | 2018/07/09 08:00 | Rehberg, Marvin v Kopeinigg, Daniel | 5-7,6-4,6-2 |
| ITF Germany F7 | 2018/07/08 08:00 | Rehberg, Marvin v Burgos, Mark | 6-4,6-2 |
| ITF Germany F11 | 2018/08/09 11:40 | Jan Choinski v Schmitz, Constantin | 6-3,6-2 |
| ITF Germany F11 | 2018/08/07 09:00 | Schmitz, Constantin v Seifert, Stefan | 7-5,2-6,6-2 |
| ITF Germany F10 | 2018/08/02 13:00 | Schmitz, Constantin v Vanneste, Jeroen | 6-4,6-7,3-6 |
| ITF Germany F10 | 2018/08/01 11:00 | Jelle Sels v Schmitz, Constantin | 6-4,6-7,5-7 |
| ITF Germany F10 Qual | 2018/07/30 12:00 | Breitbach, Kai v Schmitz, Constantin | 2-6,3-6 |
| ITF Germany F10 Qual | 2018/07/29 13:30 | Muzzi, Felipe v Schmitz, Constantin | 0-6,0-6 |
| ITF Germany F9 | 2018/07/25 16:00 | Boehler, Dominik v Schmitz, Constantin | 6-1,6-3 |
| ITF Germany F9 | 2018/07/24 17:30 | Botezan, George v Schmitz, Constantin | 2-6,7-5,3-6 |