Stadium: Wisla Centrum 2 Round: 26 Ground: Clay
| ITF Poland F2 | 2018/05/07 11:00 | David Poljak v Gelhardt, Luca | 4-6,2-6 |
| ITF Poland F1 | 2018/05/03 09:00 | Gelhardt, Luca v Meis, Pascal | 3-6,3-6 |
| ITF Poland F1 | 2018/05/01 09:45 | Smola, Maciej v Gelhardt, Luca | 6-4,4-6,0-6 |
| Challenger Lille Qual | 2018/03/17 17:45 | Borsos, Gabor v Gelhardt, Luca | 6-4,6-0 |
| ITF Greece F2 | 2018/03/05 07:30 | Gelhardt, Luca v Summaria, Corrado | 4-6,3-6 |
| ITF Greece F2 | 2018/03/04 08:00 | Gelhardt, Luca v Michalis Sakellaridis | 6-1,7-5 |
| ITF Greece F2 | 2018/03/03 07:30 | Gelhardt, Luca v Harajchi, Aria | 6-3,6-3 |
| ITF Greece F1 | 2018/02/27 08:00 | Stergiou, Ioannis v Gelhardt, Luca | 6-3,6-4 |
| ITF Poland F2 | 2018/05/08 10:00 | Netuschil, Marvin v Marek, Wojciech | 6-2,6-4 |
| ITF Turkey F13 | 2018/04/04 08:30 | Netuschil, Marvin v Felipe Meligeni Rodrigues Alves | 6-3,1-6,6-7 |
| Turkey F12, Singles Qualifying | 2018/03/28 08:40 | Netuschil, Marvin v Oscar Jose Gutierrez | 4-6,0-6 |
| Turkey F10, Singles Qualifying | 2018/03/16 07:30 | Dennis Novak v Netuschil, Marvin | 7-5,6-3 |
| Turkey F10, Singles Qualifying | 2018/03/15 07:30 | Netuschil, Marvin v Torebko, Peter | 5-7,7-5,7-5 |
| Turkey F10, Singles Qualifying | 2018/03/13 09:45 | Netuschil, Marvin v Smola, Maciej | 6-3,6-3 |
| ITF Turkey F9 | 2018/03/08 09:05 | Netuschil, Marvin v Dennis Novak | 6-4,5-7,4-6 |
| ITF Turkey F9 | 2018/03/06 07:30 | Vasilyev, Ilya v Netuschil, Marvin | 4-6,2-6 |