Stadium: Court 15 Round: 64 Ground: Grass
| 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 14:50 | Ratiwatana/Ratiwatana v Broady/Clayton | 6-7,4-6 |
| ATP Stuttgart MD | 2018/06/13 15:40 | Ratiwatana/Ratiwatana v Fucsovics/Zverev | 5-7,6-3,7-10 |
| Challenger Busan MD | 2018/05/19 02:00 | Roelofse/Smith v Ratiwatana/Ratiwatana | 6-4,6-4 |
| Challenger Busan MD | 2018/05/18 02:00 | Ratiwatana/Ratiwatana v Gonzales/Schnur | 6-2,6-4 |
| Challenger Busan MD | 2018/05/15 07:10 | Ratiwatana/Ratiwatana v Matsui/Statham | 6-1,6-2 |
| Challenger Gimcheon MD | 2018/05/12 06:20 | Roelofse/Smith v Ratiwatana/Ratiwatana | 6-2,6-3 |
| Challenger Gimcheon MD | 2018/05/11 05:30 | Ratiwatana/Ratiwatana v Bury/Peng | 3-6,6-3,10-4 |
| Challenger Gimcheon MD | 2018/05/10 07:20 | Purcell/Saville v Ratiwatana/Ratiwatana | 1-6,4-6 |