Stadium: Court 15 Round: 44 Ground: Hardcourt outdoor
| Challenger Sopot | 2018/08/03 10:30 | Pedro Cachin v Thiemo De Bakker | 6-3,3-6,6-2 |
| Challenger Sopot | 2018/08/01 10:45 | Gianluca Mager v Thiemo De Bakker | 4-6,1-6 |
| Challenger Sopot | 2018/07/31 08:00 | Thiemo De Bakker v Mats Moraing | 7-6,6-2 |
| Challenger Tampere | 2018/07/27 12:00 | Tristan Lamasine v Thiemo De Bakker | 7-6,6-1 |
| Challenger Tampere | 2018/07/25 16:00 | Thiemo De Bakker v Elliot Benchetrit | 6-4,3-6,6-1 |
| Challenger Tampere | 2018/07/24 13:50 | Nicola Kuhn v Thiemo De Bakker | 6-7,1-6 |
| Challenger Scheveningen | 2018/07/22 12:00 | Yannick Maden v Thiemo De Bakker | 2-6,1-6 |
| Challenger Scheveningen | 2018/07/21 14:30 | Kimmer Coppejans v Thiemo De Bakker | 1-6,4-6 |
| Challenger Vancouver | 2018/08/17 18:00 | JC Aragone v Jason Kubler | 6-2,2-6,4-6 |
| Challenger Vancouver | 2018/08/15 18:00 | Peter Polansky v JC Aragone | 6-7,6-7 |
| Challenger Vancouver | 2018/08/14 18:55 | JC Aragone v Alex Bolt | 3-6,6-2,6-4 |
| Challenger Vancouver | 2018/08/13 22:40 | JC Aragone v Marcos Giron | 6-3,5-7,6-3 |
| Challenger Vancouver | 2018/08/12 23:00 | JC Aragone v Ricardo Rodriguez-Pace | 6-4,7-6 |
| Challenger Aptos | 2018/08/08 22:55 | JC Aragone v Prajnesh Gunneswaran | 6-4,5-7,4-6 |
| Challenger Aptos | 2018/08/06 19:55 | JC Aragone v Luke Saville | 7-5,7-6 |
| Challenger Granby | 2018/07/26 18:40 | JC Aragone v Brayden Schnur | 3-6,4-6 |