Stadium: Court 1 Round: 27 Ground: Clay
| Challenger Heilbronn MD | 2018/05/15 16:15 | Nedunchezhiyan/Weissborn v Brown/King | 6-3,6-4 |
| Challenger Heilbronn MD | 2018/05/15 13:50 | Gille/Vliegen v Skupski/Skupski | 7-6,6-4 |
| Challenger Rome MD | 2018/05/12 11:30 | Gille/Vliegen v Krawietz/Mies | 3-6,6-2,4-10 |
| Challenger Rome MD | 2018/05/08 11:55 | Gille/Vliegen v Arnaboldi/Viola | 7-6,6-3 |
| ATP Munich MD | 2018/05/02 12:05 | Gille/Vliegen v Karlovic/Zimonjic | 7-6,4-6,8-10 |
| Challenger Francavilla MD | 2018/04/25 12:35 | Gille/Vliegen v Ocleppo/Vavassori | 6-4,3-6,8-10 |
| Challenger Francavilla MD | 2018/04/23 14:35 | Gille/Vliegen v Altuna/Kolar | 6-2,3-6,10-3 |
| Challenger Tunis MD | 2018/04/20 11:00 | Gille/Vliegen v Molchanov/Zelenay | 4-6,6-4,3-10 |
| Challenger Tunis MD | 2018/04/19 11:00 | Demoliner/Lindstedt v Gille/Vliegen | 6-7,3-6 |