Stadium: Campo 3 Round: 26
| Challenger Heilbronn MD | 2018/05/19 13:00 | Krawietz/Mies v Gille/Vliegen | 6-1,7-6 |
| Challenger Heilbronn MD | 2018/05/17 13:30 | Nedunchezhiyan/Weissborn v Gille/Vliegen | 6-3,3-6,4-10 |
| 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 Lisbon MD | 2018/05/19 15:05 | Bednarek/Reese v Arevalo/Reyes-Varela | 3-6,6-3,1-10 |
| Challenger Lisbon MD | 2018/05/18 16:15 | Arends/Shamasdin v Bednarek/Reese | 4-6,6-2,8-10 |
| Challenger Lisbon MD | 2018/05/15 17:35 | Bednarek/Reese v Broady/Clayton | 6-2,6-3 |
| Challenger Braga MD | 2018/05/09 15:10 | Bednarek/Reese v Martinez Portero/Vega Hernandez | 7-6,4-6,9-11 |