Stadium: Arena Center Court Round: 28 Ground: Hardcourt indoor
| Challenger Mestre MD | 2018/05/24 12:20 | Gille/Vliegen v Bednarek/Reese | 7-5,6-4 |
| 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 Ilkley MD | 2018/06/19 13:00 | Krajicek/Nedunchezhiyan v Hurkacz/King | 6-4,6-4 |
| Challenger Nottingham MD | 2018/06/16 13:00 | Nielsen/Salisbury v Krajicek/Nedunchezhiyan | 7-6,6-1 |
| Challenger Nottingham MD | 2018/06/13 15:50 | Menendez-Maceiras/Stakhovsky v Krajicek/Nedunchezhiyan | 5-7,4-6 |
| Challenger Nottingham MD | 2018/06/12 13:50 | Klein/Ramanathan v Krajicek/Nedunchezhiyan | 6-3,1-6,8-10 |