Ground: Hardcourt outdoor
| ITF M25 Pensacola | 2025/05/13 19:30 | Kian Vakili v Quinn Vandecasteele | 6-3,4-6,7-5 |
| ITF M25 Nottingham | 2025/05/06 12:38 | Fabrizio Andaloro v Quinn Vandecasteele | 6-4,6-4 |
| ITF M25 Nottingham | 2025/05/05 12:00 | Quinn Vandecasteele v Romain Faucon | 7-6,6-4 |
| ITF M25 Nottingham Qual | 2025/05/04 12:00 | Quinn Vandecasteele v Dylan Davies | 6-1,6-0 |
| ITF M25 Nottingham | 2025/04/29 10:30 | Quinn Vandecasteele v Amit Vales | 4-6,3-6 |
| ITF M25 Nottingham | 2025/04/28 10:30 | Quinn Vandecasteele v Millen Hurrion | 6-4,5-7,1-0 |
| ITF M25 Nottingham | 2025/04/27 11:10 | Quinn Vandecasteele v Phoenix Weir | 6-2,6-2 |
| Challenger Savannah | 2025/04/20 20:30 | Gabi Adrian Boitan v Quinn Vandecasteele | 6-1,2-6,6-4 |
| ITF M15 Lambermont | 2024/08/19 15:00 | Stian Klaassen v Nyo Van Dyck | 4-6,6-1,8-10 |
| ITF M15 Lambermont | 2024/08/19 09:40 | Stian Klaassen v Max Van Nunen | 6-1,5-7,10-3 |
| ITF M25 Koksijde | 2024/08/15 08:00 | Gilles Arnaud Bailly v Stian Klaassen | 6-3,6-1 |
| ITF M25 Koksijde | 2024/08/12 10:50 | Stian Klaassen v Sam Bakker | 6-2,6-4 |
| ITF M25 Koksijde | 2024/08/11 12:10 | Stian Klaassen v Lars Goran Verwerft | 6-2,2-6,14-12 |
| 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 |