Stadium: Court 10 Round: 54 Ground: Clay
| ITF M25 The Hague | 2021/06/27 08:00 | Simon Freund v Lodewijk Weststrate | 1-6,3-6 |
| ITF M25 Alkmaar | 2021/06/20 12:30 | Lodewijk Weststrate v Zachary Eisinga | 2-6,1-6 |
| ITF M15 Heraklion | 2020/11/01 08:30 | Lodewijk Weststrate v Dominik Kellovsky | 3-6,6-3,15-17 |
| ITF M15 Heraklion | 2020/10/25 10:30 | Lodewijk Weststrate v Adrian Andreev | 3-6,2-6 |
| ITF M15 Alkmaar | 2020/08/24 08:00 | Lodewijk Weststrate v Sem Verbeek | 4-6,2-6 |
| ITF M15 Heraklion | 2020/02/17 08:30 | Ljubomir Celebic v Lodewijk Weststrate | 7-5,6-3 |
| ITF M15 Heraklion | 2020/02/16 08:30 | Lodewijk Weststrate v Vojtech Vlkovsky | 6-3,6-3 |
| ITF M15 Heraklion | 2020/02/13 08:30 | Alexis Musialek v Lodewijk Weststrate | 6-4,6-2 |
| ITF M25 The Hague | 2021/06/27 08:00 | Dax Donders v Zachary Eisinga | 6-2,7-5 |
| ITF M25 Alkmaar | 2021/06/24 14:55 | Dax Donders v Javier Barranco Cosano | 4-6,2-6 |
| ITF M25 Alkmaar | 2021/06/23 18:05 | Dax Donders v Amaury Raynel | 5-7,6-3,6-1 |
| ITF M15 Skopje | 2021/05/30 08:00 | Dax Donders v Taiyo Yamanaka | 4-6,4-6 |
| ITF M15 Antalya | 2021/05/09 07:00 | Dax Donders v Alafia Ayeni | 5-7,3-6 |
| ITF M15 Antalya | 2021/05/03 07:00 | Dax Donders v Colin Sinclair | 6-1,3-6,4-10 |
| ITF M15 Antalya | 2021/05/02 06:00 | Dax Donders v Oscar Moraing | 4-6,6-4,10-7 |
| ITF M15 Antalya | 2021/03/30 07:00 | Max Houkes v Dax Donders | 6-2,6-2 |