Stadium: Court 1 Round: 54 Ground: Clay
| ITF M15 Bad Schussenried | 2019/07/22 13:00 | Lucas Hellfritsch v Gabriele Moghini | 1-6,1-6 |
| ITF M15 Bad Schussenried | 2019/07/22 08:00 | Lucas Hellfritsch v Gabriel Sanchez | 6-0,6-1 |
| ITF M15 Marburg | 2019/07/08 09:00 | William Ma v Lucas Hellfritsch | 3-6,7-6,3-10 |
| ITF M15 Marburg | 2019/07/08 08:00 | Bart Van Den Berg v Lucas Hellfritsch | 6-1,7-6 |
| ITF M15 Den Haag | 2019/07/01 07:30 | Lucas Hellfritsch v Jing L Weng | 2-6,1-6 |
| ITF M15 Alkmaar | 2019/06/26 16:50 | Jesper De Jong v Lucas Hellfritsch | 6-3,6-4 |
| ITF M15 Alkmaar | 2019/06/25 09:00 | Lucas Hellfritsch v Matthew Dellavedova | 0-6,6-0,10-2 |
| ITF M15 Alkmaar | 2019/06/24 13:00 | Lucas Hellfritsch v Mislav Bosnjak | 6-4,4-6,10-6 |
| ITF M15 Alkmaar | 2019/06/27 09:55 | Zachary Eisinga v Andrea Bolla | 6-7,3-6 |
| ITF M15 Alkmaar | 2019/06/26 09:40 | Zachary Eisinga v Alex Martinez | 4-6,6-2,6-4 |
| ITF Netherlands F6 | 2018/08/29 14:50 | Zachary Eisinga v Colin Van Beem | 4-6,3-6 |
| ITF Netherlands F6 | 2018/08/27 10:00 | Oscar Moraing v Zachary Eisinga | 6-7,1-6 |
| ITF Netherlands F6 | 2018/08/26 08:00 | Zachary Eisinga v Sebastiano M Zorzi | 6-1,6-3 |
| ITF Netherlands F5 | 2018/08/18 08:00 | Thorsten Sollie v Zachary Eisinga | 4-6,6-4,4-6 |
| ITF Netherlands F4 | 2018/08/12 07:30 | Tim Van Terheijden v Zachary Eisinga | 6-2,6-0 |
| ITF Netherlands F4 | 2018/08/11 09:00 | Jesse Paul Krattiger v Zachary Eisinga | 4-6,3-6 |