Stadium: Court 5 Round: 25 Ground: Clay
| ITF Poland F6 Qual | 2018/08/06 08:00 | Wojcik, Yann v Hellfritsch, Lucas | 6-7,4-6 |
| ITF Poland F6 Qual | 2018/08/05 09:30 | Mugevicius, Lukas v Hellfritsch, Lucas | 6-4,1-6,0-6 |
| ITF Germany F9 | 2018/07/22 11:00 | Hellfritsch, Lucas v Maik Steiner | 6-7,3-6 |
| ITF Germany F8 Qual | 2018/07/15 08:00 | Puodziunas, Scott v Hellfritsch, Lucas | 6-3,6-3 |
| ITF Germany F6 | 2018/07/02 09:00 | Hellfritsch, Lucas v Boris Fassbender | 5-7,2-6 |
| ITF Germany F4 | 2018/06/16 08:00 | Matthew Dellavedova v Hellfritsch, Lucas | 6-4,6-1 |
| Turkey F14, Singles Qualifying | 2018/04/08 07:30 | Hellfritsch, Lucas v Maresca, Santiago | 3-6,5-7 |
| Turkey F14, Singles Qualifying | 2018/04/07 11:00 | Guttau, Niklas v Hellfritsch, Lucas | 4-6,3-6 |
| Challenger Segovia Qual | 2018/07/29 10:30 | Romero de Avila Senise, Alberto v Matias Franco Descotte | 7-6,6-3 |
| Challenger Segovia Qual | 2018/07/28 09:30 | Herrero, Javier v Matias Franco Descotte | 0-6,3-6 |
| Challenger Tampere Qual | 2018/07/22 07:30 | Matias Franco Descotte v Alejandro Davidovich Fokina | 1-6,3-6 |
| Challenger Tampere | 2018/07/21 07:00 | Matias Franco Descotte v Eero Vasa | 6-4,6-4 |
| ITF Germany F7 | 2018/07/14 13:00 | Matias Franco Descotte v Haim, Matthias | 3-6,4-6 |
| ITF Germany F7 | 2018/07/13 15:00 | Niklas Schell v Matias Franco Descotte | 4-6,4-6 |
| ITF Germany F7 | 2018/07/12 13:05 | Vibert, Francois Arthur v Matias Franco Descotte | 3-6,3-6 |
| ITF Germany F7 | 2018/07/10 09:00 | Wiedenhorn, Nic v Matias Franco Descotte | 1-6,2-6 |