Round: 26 Ground: Clay
| ITF Netherlands F2 | 2017/06/27 10:55 | Westerhof, Boy v Veldheer, Mick | 6-4,6-2 |
| ITF Netherlands F1 | 2017/06/22 17:45 | de Bakker, Thiemo v Westerhof, Boy | 6-2,6-2 |
| ITF Turkey F22 | 2017/06/07 11:50 | Vilella Martinez, Mario v Westerhof, Boy | 6-3,6-2 |
| ITF Sweden F2 | 2017/05/17 10:00 | Vilella Martinez, Mario v Westerhof, Boy | 7-6,4-6,6-3 |
| ITF Sweden F2 | 2017/05/16 08:15 | Arvidsson Ehn, Jakob v Westerhof, Boy | 1-6,2-6 |
| ITF Italy F12 | 2017/05/14 09:00 | Westerhof, Boy v Juan Pablo Ficovich | 3-6,4-6 |
| ITF Italy F12 | 2017/05/13 09:00 | Westerhof, Boy v Hernan Casanova | 7-6,7-5 |
| ITF Italy F12 | 2017/05/12 09:00 | Westerhof, Boy v Vandenbulcke, Yannick | 6-1,6-3 |
| ITF Netherlands F2 | 2017/06/27 10:55 | Matthew Dellavedova v Marek Gengel | 1-6,4-6 |
| ITF Spain F18 | 2017/06/20 18:20 | Nielsen, Frederik v Marek Gengel | 7-5,7-5 |
| ITF Hungary F4 | 2017/06/15 11:35 | Constant Lestienne v Marek Gengel | 6-1,7-5 |
| ITF Hungary F4 | 2017/06/13 12:10 | Wojnar, Bartosz v Marek Gengel | 0-6,4-6 |
| ITF Czech Republic F3 | 2017/05/31 08:30 | Marko, Michal v Marek Gengel | 7-6,4-6,6-4 |
| ITF Czech Republic F1 | 2017/05/17 08:30 | Obert, Adrian v Marek Gengel | 6-2,6-4 |
| Challenger Ostrava Qual | 2017/04/30 08:00 | Sebastian Ofner v Marek Gengel | 7-5,6-0 |
| Challenger Ostrava Qual | 2017/04/29 11:25 | Marek Gengel v Anagnastopol, Victor | 6-3,6-1 |