Stadium: Van Mossel Kia Court Round: 26 Ground: Clay
| Challenger Amersfoort | 2019/07/17 16:30 | Tallon Griekspoor v Sebastian Fanselow | 6-1,4-6,3-6 |
| Challenger Amersfoort | 2019/07/15 16:30 | Ryan Nijboer v Sebastian Fanselow | 4-6,2-6 |
| Challenger Ludwigshafen | 2019/07/03 16:00 | Dustin Brown v Sebastian Fanselow | 6-3,6-2 |
| Challenger Ludwigshafen | 2019/07/01 11:50 | Alexey Vatutin v Sebastian Fanselow | 7-5,2-6,6-7 |
| Challenger Milan | 2019/06/27 14:00 | Aslan Karatsev v Sebastian Fanselow | 6-4,6-2 |
| Challenger Milan | 2019/06/26 13:30 | Sebastian Fanselow v Paolo Lorenzi | 6-4,7-5 |
| Challenger Milan | 2019/06/24 15:30 | Sebastian Fanselow v Christopher Heyman | 7-5,7-6 |
| Challenger Bratislava | 2019/06/19 08:00 | Sebastian Fanselow v Alexey Vatutin | 4-6,4-6 |
| Challenger Amersfoort | 2019/07/17 13:35 | Igor Sijsling v Johan Sebastien Tatlot | 6-3,7-5 |
| Challenger Amersfoort | 2019/07/16 08:00 | Julian Lenz v Igor Sijsling | 4-6,1-6 |
| 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 |