| Dutch Int. - Qualif. | 03/14 13:00 | - | Noah Haase v Senne Houthoofd | L | 2-0 | |
| Open de Suède - Qualif. | 01/18 15:35 | - | Senne Houthoofd v Kai Hern Huan | L | 0-2 | |
| Open de Suède - Qualif. | 01/18 10:55 | - | Senne Houthoofd v Ragnar Sepp | W | 2-0 | |
| Irish Open Qual | 11/15 14:15 | - | Senne Houthoofd v Mathias Solgaard | L | 0-2 | |
| Irish Open Qual | 11/15 09:35 | - | Eid Ali Al Maliki v Senne Houthoofd | W | 0-2 | |
| Hungarian Int. Qual | 11/02 08:00 | - | Senne Houthoofd v Jan Janostik | L | 1-2 | |
| Hungarian Int. Qual | 11/01 16:45 | - | Senne Houthoofd v Jamie Pearcy | W | 2-0 | |
| Dutch Open (GP) 2017, Qualification | 10/11 12:20 | - | Senne Houthoofd v Veenstra, Niels | L | 1-2 | |
| Scottish Open Qual | 10/05 13:45 | - | Senne Houthoofd v Alvaro Vazquez | L | 0-2 | |
| Scottish Open Qual | 10/05 13:15 | - | Senne Houthoofd v Harper Leigh | W | 2-0 | |
| Scottish Open Qual | 10/05 09:20 | - | Senne Houthoofd v Thomas Joseph Stanford | W | 2-0 | |
| Belgian Int. Qual | 09/13 10:20 | - | Yanis Gaudin v Senne Houthoofd | L | 2-0 | |
| Irish Open Qual | 11/16 13:05 | - | Senne Houthoofd v Joakim Oldorff | L | 0-2 | |
| Irish Open Qual | 11/16 10:00 | - | Senne Houthoofd v Joseph Waugh | W | 2-0 | |
| Hungarian Int. Qual | 11/02 17:55 | - | Louis Ducrot v Senne Houthoofd | L | 2-0 | |
| Hungarian Int. Qual | 11/02 10:20 | - | Senne Houthoofd v Spoljarec, Filip | W | 2-1 | |
| Croatian Int. Qual | 09/29 08:55 | - | Amaury Lievre v Senne Houthoofd | L | 2-0 | |
| Nouvelle-Aquitaine Int. | 08/25 09:55 | - | Senne Houthoofd v Shun Tian Lim | L | 0-2 | |
| Austrian Open Qual | 05/26 10:00 | - | Schausberger, Michael v Senne Houthoofd | L | 2-0 | |
| Slovenia Int. Qual | 05/18 07:45 | - | Akmens, Arturs v Senne Houthoofd | W | 0-2 | |
| Luxembourg Open Qual | 05/05 13:00 | - | Valentin Singer v Senne Houthoofd | L | 2-0 | |
| Luxembourg Open Qual | 05/05 07:40 | - | Carl Claesson v Senne Houthoofd | W | 1-2 | |
| Dutch Int. - Qualif. | 04/13 07:00 | - | Meusburger, Kilian v Senne Houthoofd | L | 2-1 | |
| Italian Int. Qual | 12/16 16:45 | - | Senne Houthoofd v Markus Barth | L | 0-2 | |
| Italian Int. Qual | 12/16 10:00 | - | Senne Houthoofd v Robin Mesman | W | 2-0 | |
| Slovenia Future Series Qual | 11/25 10:55 | 6 | Senne Houthoofd v Oliver Lee Nowak | L | 1-2 | |
| Austrian Open Qual | 05/27 08:10 | - | Senne Houthoofd v Pratama, Adi | L | 0-2 | |
| Slovenia Int. Qual | 05/19 14:40 | - | Senne Houthoofd v Justin Hoh | L | 0-2 | |
| Slovenia Int. Qual | 05/19 13:25 | - | Senne Houthoofd v Adam Konczol | W | 2-0 | |
| Slovenia Int. Qual | 05/19 11:30 | - | Martin Cerkovnik v Senne Houthoofd | W | 0-2 |