Stadium: Court 2 Round: 54 Ground: Clay
| ITF M25 The Hague | 2024/07/08 10:00 | Erik Grevelius v Stian Klaassen | 7-6,6-3 |
| ITF M25 The Hague | 2024/07/07 08:00 | Roland Stuurman v Stian Klaassen | 7-5,5-7,8-10 |
| ITF M15 Amstelveen | 2024/07/01 13:05 | Fons Van Sambeek v Stian Klaassen | 6-3,6-3 |
| ITF M15 Amstelveen | 2024/06/30 09:00 | Stephanos Schinas v Stian Klaassen | 1-6,3-6 |
| ITF M15 Alkmaar | 2024/06/26 12:00 | Stian Klaassen v Niels Visker | 2-6,3-6 |
| ITF M15 Alkmaar | 2024/06/24 08:00 | Lodewijk Weststrate v Stian Klaassen | 6-3,2-6,10-4 |
| ITF M15 San Diego | 2024/06/13 17:00 | Patrick Maloney v Stian Klaassen | 6-2,5-7,6-0 |
| ITF M15 San Diego | 2024/06/12 20:25 | Stian Klaassen v James Tracy | 6-2,1-6,6-4 |
| ITF M15 Eupen | 2024/08/08 09:00 | Lars Goran Verwerft v Elmar Ejupovic | 7-5,5-7,4-6 |
| ITF M15 Eupen | 2024/08/07 09:00 | Lars Goran Verwerft v Emilien Demanet | 6-3,3-6,7-5 |
| ITF M15 Eupen | 2024/08/05 17:10 | Lars Goran Verwerft v Benoit Torcq | 6-1,6-4 |
| ITF M15 Eupen | 2024/08/05 08:00 | Lars Goran Verwerft v Freek Van Donselaar | 6-1,6-3 |
| ITF M15 Eupen | 2024/08/04 14:00 | Dimitris Sakellaridis v Lars Goran Verwerft | 2-6,3-6 |
| ITF M25 Esch/Alzette | 2024/07/15 11:50 | Lars Goran Verwerft v Adam Briant | 6-2,6-2 |
| ITF M25 Esch/Alzette | 2024/07/14 10:15 | Robi Tholl v Lars Goran Verwerft | 0-6,2-6 |
| ITF M25 Kassel | 2024/07/08 15:00 | Iannis Miletich v Lars Goran Verwerft | 6-1,6-1 |