Stadium: Court 2 Round: 25 Ground: Hardcourt outdoor
| Portugal F4, Singles Qualifying | 2018/03/12 10:00 | Dermiens, Guillaume v Hellfritsch, Lucas | View |
| Portugal F4, Singles Qualifying | 2018/03/10 11:00 | Hellfritsch, Lucas v Perret, Loic | 7-6,7-6 |
| ITF Netherlands F6 | 2017/08/19 10:00 | van Der Horst, Tim v Hellfritsch, Lucas | 6-3,6-3 |
| ITF Germany F10 | 2017/08/06 08:00 | Benjamin Hassan v Hellfritsch, Lucas | 6-3,6-4 |
| ITF Germany F9 | 2017/07/31 09:00 | van Peperzeel, Gavin v Hellfritsch, Lucas | 7-6,6-4 |
| ITF Germany F9 | 2017/07/30 08:00 | Hellfritsch, Lucas v Quinti, Adriano | 5-7,6-3,7-6 |
| ITF Germany F4 | 2017/06/17 10:30 | Mannapov, Alexander v Hellfritsch, Lucas | 0-6,6-2,6-4 |
| ITF Greece F7 | 2016/10/22 09:30 | Schramm, Marvin v Hellfritsch, Lucas | 2-6,6-1,6-3 |
| ITF Portugal F3 | 2018/03/10 13:35 | Frederico Ferreira Silva v Niesten, Miliaan | 6-2,6-3 |
| ITF Portugal F3 | 2018/03/08 13:30 | Marc-Andrea Huesler v Niesten, Miliaan | 2-6,1-6 |
| ITF Thailand F12 Qual | 2017/12/11 03:00 | Niesten, Miliaan v Tsoronis, Socrates Leon | 6-2,6-3 |
| ITF Thailand F12 Qual | 2017/12/10 03:00 | Niesten, Miliaan v Praditngam, Jamie Asanee | 6-4,6-1 |
| ITF Thailand F11 | 2017/12/05 03:30 | Evan Furness v Niesten, Miliaan | 6-3,7-6 |
| ITF Thailand F11 Qual | 2017/12/04 03:00 | Niesten, Miliaan v Matteo Martineau | 4-6,6-3,7-5 |
| ITF Thailand F11 Qual | 2017/12/03 03:00 | Niesten, Miliaan v Kerdlaphee, Phongsapak | 6-3,6-2 |
| ITF Thailand F10 | 2017/12/01 03:00 | Alexey Vatutin v Niesten, Miliaan | 6-0,6-3 |