Stadium: Court 4 Round: 62 Ground: Clay
| Challenger Meerbusch Qual | 2017/08/12 12:10 | Antonio Sancic v Tim Sandkaulen | 7-6,6-1 |
| ITF Netherlands F4 | 2017/07/11 08:00 | Tom Farquharson v Tim Sandkaulen | 6-2,6-2 |
| ITF Netherlands F4 | 2017/07/09 08:00 | Tim Sandkaulen v Joris Bodin | 6-2,6-1 |
| ITF Netherlands F4 | 2017/07/08 10:30 | Kody Pearson v Tim Sandkaulen | 4-6,2-6 |
| ITF Netherlands F4 | 2017/07/08 08:00 | Ilco Van Buuren v Tim Sandkaulen | 6-2,6-7,2-6 |
| ITF USA F35 | 2016/10/28 19:00 | Jakub Wojcik v Tim Sandkaulen | 6-2,4-6,2-6 |
| ITF USA F28 | 2016/09/11 16:30 | Tim Sandkaulen v Marcelo Tebet | 5-7,2-6 |
| ITF USA F28 | 2016/09/10 17:00 | Tim Sandkaulen v Errol Smith | 6-3,6-4 |
| Challenger Scheveningen Qual | 2018/07/14 16:00 | Gijs Brouwer v Lodewijk Weststrate | 6-1,6-3 |