Stadium: Loule 4 Round: 62 Ground: Hardcourt outdoor
| 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 Germany F4 | 2016/06/18 08:00 | Hellfritsch, Lucas v Moerl, Benedict | 3-6,3-6 |
| ITF Greece F9 Qual | 2015/10/24 09:30 | Hellfritsch, Lucas v Smolicki, Mateusz | 7-6,3-6,3-6 |
| ITF Portugal F3 | 2018/03/06 15:00 | Gomar Monio, Luis v Perret, Loic | 6-3,6-1 |
| Egypt F6, Singles Qualifying | 2018/02/19 08:00 | Perret, Loic v Duje Ajdukovic | 0-6,1-6 |
| Egypt F6, Singles Qualifying | 2018/02/18 10:30 | Perret, Loic v Boris Fassbender | 6-4,6-2 |
| Egypt F6, Singles Qualifying | 2018/02/17 08:00 | Hajek, Petr v Perret, Loic | 3-6,7-6,4-6 |
| Egypt F5, Singles Qualifying | 2018/02/10 12:00 | Perret, Loic v Shropshire, Samuel | 1-6,1-6 |
| Challenger Noumea | 2018/01/01 01:00 | Perret, Loic v Millot, Vincent | 1-6,1-6 |
| ITF Israel F17 | 2017/12/07 09:00 | Perret, Loic v Barkai, Yannai | 6-7,3-6 |
| ITF Israel F16 | 2017/11/29 09:50 | Edan Leshem v Perret, Loic | 6-2,7-5 |