Stadium: Clay 1 Round: 26 Ground: Hardcourt outdoor
| ITF Turkey F30 | 2018/10/03 08:50 | Alekseenko, Vadim v Hellfritsch, Lucas | 4-6,6-3,2-6 |
| ITF Turkey F30 | 2018/10/01 07:30 | Mert Alkaya v Hellfritsch, Lucas | 3-6,2-6 |
| ITF Netherlands F6 | 2018/08/26 07:00 | Butsch, Justin v Hellfritsch, Lucas | 6-2,6-2 |
| ITF Netherlands F6 | 2018/08/25 08:00 | Persad, Aneil v Hellfritsch, Lucas | 2-6,2-6 |
| ITF Netherlands F5 | 2018/08/21 09:55 | Nik Razborsek v Hellfritsch, Lucas | 6-4,7-6 |
| ITF Netherlands F5 | 2018/08/19 10:00 | Schroll, Philipp v Hellfritsch, Lucas | 2-6,1-6 |
| ITF Netherlands F5 | 2018/08/18 08:00 | Hellfritsch, Lucas v Oscar Moraing | 2-6,7-6,6-1 |
| ITF Netherlands F5 | 2018/08/18 07:00 | Hellfritsch, Lucas v Allemby, James | 6-3,7-6 |
| ITF Turkey F30 | 2018/10/03 09:20 | Walder, Jordi v Michael Vrbensky | 4-6,1-6 |
| ITF Turkey F29 | 2018/09/25 07:30 | Thiem, Moritz v Michael Vrbensky | 6-0,6-1 |
| Challenger Liberec | 2018/08/03 13:30 | Michael Vrbensky v Andrej Martin | 3-6,1-6 |
| Challenger Liberec | 2018/08/02 09:00 | Ignatik, Uladzimir v Michael Vrbensky | 6-4,5-7,4-6 |
| Challenger Liberec | 2018/07/31 14:00 | David Poljak v Michael Vrbensky | 6-2,1-6,3-6 |
| ITF Austria F4 | 2018/07/25 11:30 | Peter Heller v Michael Vrbensky | 7-6,7-6 |
| ITF Austria F4 | 2018/07/24 08:00 | Michael Vrbensky v Yvo Panak | 6-4,6-1 |
| ITF Austria F3 | 2018/07/21 09:00 | Nerman Fatic v Michael Vrbensky | 5-7,6-4,3-6 |