Stadium: COURT 1 Round: 25 Ground: Clay
| Brussels, Singles M-ITF-BEL-03A | 2019/07/30 10:00 | Dielen, Liam v Hellfritsch, Lucas | 5-7,1-6 |
| Brussels, Singles M-ITF-BEL-03A | 2019/07/29 11:00 | Romeo, Felix v Hellfritsch, Lucas | 3-6,2-6 |
| Bad Schussenried, Singles Qualifying M-ITF-GER-10A | 2019/07/22 13:00 | Hellfritsch, Lucas v Gabriele Moghini | 1-6,1-6 |
| Bad Schussenried, Singles Qualifying M-ITF-GER-10A | 2019/07/22 08:00 | Hellfritsch, Lucas v Sanchez, Gabriel | 6-0,6-1 |
| ITF M15 Marburg | 2019/07/08 09:00 | Ma, William v Hellfritsch, Lucas | 3-6,7-6,3-10 |
| ITF M15 Marburg | 2019/07/08 08:00 | van Den Berg, Bart v Hellfritsch, Lucas | 6-1,7-6 |
| Den Haag, Singles Qualifying M-ITF-NED-02A | 2019/07/01 07:30 | Hellfritsch, Lucas v Weng, Jing Long | 2-6,1-6 |
| ITF M15 Alkmaar | 2019/06/26 16:50 | Jesper De Jong v Hellfritsch, Lucas | 6-3,6-4 |
| ITF M25 Denia | 2019/07/22 08:30 | van Der Meerschen, Martin v Saez-Royuela Ariza, Alvaro | 3-6,3-6 |
| Tanger, Singles M-ITF-MAR-01A | 2019/07/16 12:30 | Quentin Folliot v van Der Meerschen, Martin | 6-2,6-0 |
| Lasne, Singles Qualifying M-ITF-BEL-02A | 2019/07/03 17:55 | van Der Meerschen, Martin v Giusca, Teodor | 7-6,1-6,3-6 |
| ITF M25 Arlon | 2019/06/26 08:00 | Bergevi, Filip v van Der Meerschen, Martin | 6-4,6-1 |
| ITF M25 Arlon | 2019/06/25 09:55 | van Der Meerschen, Martin v Schott, Hugo | 3-6,6-3,9-11 |
| ITF M25 Arlon | 2019/06/24 11:10 | van Der Meerschen, Martin v de Cuyper, Julien | 6-2,6-0 |
| Tabarka, Singles Qualifying M-ITF-TUN-41A | 2019/06/12 09:00 | van Der Meerschen, Martin v Guido Ivan Justo | 1-6,0-6 |
| Tabarka, Singles Qualifying M-ITF-TUN-41A | 2019/06/10 13:15 | Alcalde, Juan Ignacio v van Der Meerschen, Martin | 3-6,2-6 |