Stadium: Centre Court Round: 25 Ground: Clay
| ITF Austria F5 | 2017/08/02 08:00 | Ollert, Lukas v Haim, Matthias | 4-6,6-7 |
| 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 F24 | 2017/08/01 18:00 | Igor Sijsling v Bachinger, Matthias | 6-7,1-6 |
| ITF Italy F23 | 2017/07/28 19:15 | Igor Sijsling v Sumit Nagal | 3-6,0-6 |
| ITF Italy F23 | 2017/07/27 16:30 | Trevisan, Matteo v Igor Sijsling | 2-6,6-3,4-6 |
| ITF Italy F23 | 2017/07/25 13:10 | Acquaroli, Gianluca v Igor Sijsling | 1-6,3-6 |
| ITF Netherlands F4 | 2017/07/11 13:20 | Stevens, Bart v Igor Sijsling | 7-6,4-6,6-4 |
| ITF Netherlands F3 | 2017/07/06 11:20 | Jelle Sels v Igor Sijsling | 6-2,0-6,7-5 |
| ITF Netherlands F3 | 2017/07/05 18:55 | Borg, Maikel v Igor Sijsling | 4-6,2-6 |
| ITF Netherlands F1 | 2017/06/22 16:15 | Igor Sijsling v Van Terheijden, Tim | 4-6,3-6 |