| ITF M25 Calabasas | 03/19 17:00 | 54 | Hiroki Sakagawa v Lodewijk Weststrate | 6-2,6-3 | |
| ITF M25 Calabasas | 03/18 17:00 | 54 | Alex Kobelt v Lodewijk Weststrate | 2-6,2-6 | |
| ITF M15 Eindhoven | 07/30 12:00 | 54 | Jurriaan Bol v Lodewijk Weststrate | 6-4,3-6,10-7 | |
| ITF M25 Esch/Alzette | 07/19 10:50 | 25 | Lodewijk Weststrate v Mikalai Haliak | 6-7,6-4,3-6 | |
| ITF M25 Esch/Alzette | 07/17 13:20 | 44 | Lodewijk Weststrate v Felix Einig | 6-4,6-3 | |
| ITF M25 Esch/Alzette | 07/17 08:35 | 44 | Lodewijk Weststrate v Jim Hendrikx | 6-0,6-4 | |
| ITF M25 The Hague | 07/02 10:30 | 54 | Stijn Paardekooper v Lodewijk Weststrate | 6-2,6-4 | |
| ITF M15 Alkmaar | 06/28 16:20 | 25 | Lodewijk Weststrate v Mees Rottgering | 6-7,6-7 | |
| ITF M15 Saarlouis | 06/23 12:30 | 27 | Lodewijk Weststrate v Sander Jong | 3-6,7-5,2-6 | |
| ITF M15 Saarlouis | 06/22 11:30 | 26 | Lodewijk Weststrate v Guy Den Heijer | 7-6,6-4 | |
| ITF M15 Saarlouis | 06/21 17:05 | 25 | Amr Elsayed v Lodewijk Weststrate | 5-7,1-6 | |
| ITF M15 Saarlouis | 06/19 09:30 | 54 | Jurriaan Bol v Lodewijk Weststrate | 0-6,5-7 | |
| ITF M15 Saarlouis | 06/18 09:00 | 54 | Johann Lars v Lodewijk Weststrate | 4-6,2-6 | |
| ITF M15 Duffel | 06/12 10:00 | 54 | Adrian Oetzbach v Lodewijk Weststrate | 7-5,1-6,12-10 | |
| ITF M15 Duffel | 06/11 11:00 | 54 | Aaron James Williams v Lodewijk Weststrate | 2-6,7-6,5-10 | |
| ITF M15 Vejle | 07/27 09:40 | 25 | Christian Sigsgaard v Lodewijk Weststrate | 6-7,6-1,6-4 | |
| ITF M15 Vejle | 07/25 14:55 | 54 | Stijn Slump v Lodewijk Weststrate | 2-6,3-6 | |
| ITF M25 Den Haag | 06/29 17:50 | 25 | Lodewijk Weststrate v Dax Donders | 4-6,6-7 | |
| ITF M25 Den Haag | 06/27 08:00 | - | Lodewijk Weststrate v Florian Broska | 6-7,6-4,11-9 | |
| ITF M25 Den Haag | 06/26 08:00 | 54 | Romain Faucon v Lodewijk Weststrate | 2-6,1-6 | |
| ITF M15 Alkmaar | 06/23 16:20 | 26 | Lodewijk Weststrate v Jose F Vidal Azorin | 6-2,2-6,3-6 | |
| ITF M15 Alkmaar | 06/22 13:30 | 25 | Lodewijk Weststrate v Lorenzo Vatteroni | 7-6,6-3 | |
| ITF M25 Alkmaar | 06/20 08:00 | 54 | Amaury Raynel v Lodewijk Weststrate | 6-4,3-6,11-13 | |
| ITF M25 Alkmaar | 06/19 11:30 | 54 | Lodewijk Weststrate v Teun Rozenberg | 6-0,6-3 | |
| ITF M25 The Hague | 07/01 07:30 | 25 | Lodewijk Weststrate v Tim Van Rijthoven | 2-6,5-7 | |
| ITF M25 The Hague | 06/28 07:50 | 54 | Lodewijk Weststrate v Dax Donders | 6-7,6-1,10-5 | |
| ITF M25 The Hague | 06/27 08:00 | 54 | Simon Freund v Lodewijk Weststrate | 1-6,3-6 | |
| ITF M25 Alkmaar | 06/20 12:30 | 54 | Lodewijk Weststrate v Zachary Eisinga | 2-6,1-6 | |
| ITF M15 Heraklion | 11/01 08:30 | 44 | Lodewijk Weststrate v Dominik Kellovsky | 3-6,6-3,15-17 | |
| ITF M15 Heraklion | 10/25 10:30 | 44 | Lodewijk Weststrate v Adrian Andreev | 3-6,2-6 |