Stadium: Court 1 Round: 24 Ground: Clay
| Challenger Braunschweig | 2019/07/08 13:05 | Julian Lenz v Yannick Hanfmann | 5-7,4-6 |
| Challenger Ludwigshafen | 2019/07/02 09:00 | Johannes Haerteis v Julian Lenz | 3-6,7-6,7-6 |
| Challenger Parma | 2019/06/21 09:00 | Jacopo Berrettini v Julian Lenz | 1-6,3-6 |
| Challenger Parma | 2019/06/20 09:25 | Filip Peliwo v Julian Lenz | 3-6,1-6 |
| Challenger Parma | 2019/06/19 10:05 | Julian Lenz v Alessandro Giannessi | 6-1,6-4 |
| Challenger Parma | 2019/06/18 08:00 | Riccardo Bonadio v Julian Lenz | 6-7,2-6 |
| ITF M25 Karlsruhe | 2019/06/09 11:00 | Julian Lenz v Andrea Pellegrino | 6-3,6-7,6-3 |
| ITF M25 Karlsruhe | 2019/06/08 14:50 | Julian Lenz v Marvin Netuschil | 6-1,6-2 |
| Challenger Amersfoort | 2019/07/15 08:00 | Igor Sijsling v Sergio Martos Gornes | 6-1,6-1 |
| ITF M15 Den Haag | 2019/07/06 12:10 | Igor Sijsling v Matias Zukas | 6-7,6-1,3-6 |
| ITF M15 Den Haag | 2019/07/05 15:00 | Manuel Guinard v Igor Sijsling | 0-6,2-6 |
| ITF M15 Den Haag | 2019/07/04 16:00 | Bart Van Den Berg v Igor Sijsling | 3-6,2-6 |
| ITF M15 Den Haag | 2019/07/03 13:35 | Mats Hermans v Igor Sijsling | 2-6,1-6 |
| ITF M15 Alkmaar | 2019/06/28 14:35 | Jesper De Jong v Igor Sijsling | 7-6,3-6,6-4 |
| ITF M15 Alkmaar | 2019/06/27 15:15 | Michiel de Krom v Igor Sijsling | 3-6,3-6 |
| ITF M15 Alkmaar | 2019/06/26 11:00 | Roy Sarut De Valk v Igor Sijsling | 6-4,1-6,2-6 |