| ITF Czech Republic F1 | 2017/05/20 08:30 | Lenz, Julian v Michael Geerts | 6-3,6-1 |
| ITF Czech Republic F1 | 2017/05/19 10:20 | Obert, Adrian v Lenz, Julian | 6-3,0-6,4-6 |
| ITF Czech Republic F1 | 2017/05/18 08:30 | Alexandar Lazarov v Lenz, Julian | 7-6,6-7,3-6 |
| ITF Czech Republic F1 | 2017/05/16 10:00 | Lenz, Julian v Hocevar, Ricardo | 6-3,5-7,7-5 |
| ITF Czech Republic F1 Qual | 2017/05/15 12:40 | Lenz, Julian v Majchrowicz, Adam | 6-1,6-3 |
| ITF Czech Republic F1 Qual | 2017/05/14 10:30 | Lenz, Julian v Recek, Dominik | 6-3,6-2 |
| ITF USA F11 | 2017/03/21 17:00 | Austin, Gonzales v Lenz, Julian | 3-6,6-3,5-7 |
| ITF USA F10 | 2017/03/14 18:00 | Lenz, Julian v Dmitry Popko | 4-6,2-6 |
| ITF Czech Republic F1 | 2017/05/20 10:00 | Maciej Rajski v Masar, Juraj | 2-6,1-6 |
| ITF Czech Republic F1 | 2017/05/19 08:30 | Alexander Vasilenko v Masar, Juraj | 4-6,3-6 |
| ITF Czech Republic F1 | 2017/05/18 11:15 | Masar, Juraj v Peter Heller | 6-1,6-1 |
| ITF Czech Republic F1 | 2017/05/17 10:10 | Nolan, Daniel v Masar, Juraj | 2-6,6-4,4-6 |
| ITF Czech Republic F1 Qual | 2017/05/15 12:00 | Masar, Juraj v Carr, Simon | 6-3,6-4 |
| ITF Czech Republic F1 Qual | 2017/05/14 10:30 | Masar, Juraj v Rieder, Horst | 3-6,6-4,7-6 |
| ITF Czech Republic F1 Qual | 2017/05/13 10:30 | Matuszewski, Piotr v Masar, Juraj | 2-6,6-3,4-6 |
| ITF Turkey F7 | 2017/02/18 09:00 | Masar, Juraj v Francesco Ferrari | 5-7,3-6 |