Round: 25 Ground: Clay
| ITF Austria F2 | 2017/07/12 10:30 | Ollert, Lukas v Viola, Matteo | 0-6,7-5,3-6 |
| ITF Austria F1 | 2017/07/03 11:00 | Andrea Pellegrino v Ollert, Lukas | 6-2,6-1 |
| ITF Belgium F1 | 2017/06/23 08:00 | Ollert, Lukas v Nicola Kuhn | 5-7,3-6 |
| ITF Belgium F1 | 2017/06/21 09:00 | Ollert, Lukas v Cailleau, Jolan | 2-6,6-4,6-0 |
| ITF Belgium F1 | 2017/06/20 12:25 | Ollert, Lukas v Mats Rosenkranz | 6-2,6-3 |
| ITF Hungary F4 | 2017/06/12 11:10 | Ollert, Lukas v Ulises Blanch | 3-6,0-6 |
| ITF Italy F12 | 2017/05/11 08:55 | Ollert, Lukas v Westerhof, Boy | 5-7,3-6 |
| ITF Italy F12 | 2017/05/10 07:30 | Mertens, Yannick v Ollert, Lukas | 6-3,4-6,2-6 |
| ITF Belgium F3 | 2017/07/04 08:00 | Reinwein, Sami v Manuel Guinard | 1-6,6-4,5-7 |
| Challenger Blois Qual | 2017/06/17 12:25 | Reinwein, Sami v Ymer, Mikael | 3-6,5-7 |
| Challenger Lyon Qual | 2017/06/10 17:55 | Gabashvili, Teimuraz v Reinwein, Sami | 6-1,6-7,6-3 |
| ITF Spain F15 | 2017/05/26 09:00 | Reinwein, Sami v Guez, David | 4-6,1-6 |
| ITF Spain F15 | 2017/05/25 09:00 | Reinwein, Sami v Ribeiro Marcondes, Igor | 6-2,6-1 |
| ITF Spain F15 | 2017/05/24 09:00 | Reinwein, Sami v Pulgar-Garcia, Jaime | 6-4,6-2 |
| ITF USA F16 | 2017/05/04 13:30 | Mantilla, Felipe v Reinwein, Sami | 6-4,6-3 |
| ITF USA F16 | 2017/05/03 15:55 | Kirkov, Vasil v Reinwein, Sami | 6-7,1-6 |