Stadium: Court 6 Round: 25 Ground: Clay
| ITF M15 Oldenzaal | 2019/08/13 07:30 | van Der Horst, Tim v Hoeveler, Leon | 7-6,6-3 |
| ITF M15 Eupen | 2019/08/07 08:00 | Max Houkes v van Der Horst, Tim | 7-5,6-4 |
| ITF M15 Eupen | 2019/08/06 10:20 | van Der Meerschen, Martin v van Der Horst, Tim | 4-6,4-6 |
| ITF M15 Eupen | 2019/08/05 14:00 | Ramiaramanan, Lofo v van Der Horst, Tim | 4-6,2-6 |
| ITF M15 Castelo Branco | 2019/07/16 09:00 | Brandao, Filipe v van Der Horst, Tim | 6-2,6-2 |
| ITF M15 Castelo Branco | 2019/07/15 09:00 | Stoliar, Illia v van Der Horst, Tim | 6-7,5-7 |
| ITF M15 Idanha-a-Nova | 2019/07/09 09:00 | Da Silva, Gabriel Ciro v van Der Horst, Tim | 6-1,4-6,10-7 |
| ITF M15 Idanha-a-Nova | 2019/07/08 09:00 | Mulye, Dhruva v van Der Horst, Tim | 1-6,1-6 |
| Challenger Amersfoort | 2019/07/15 16:30 | Ryan Nijboer v Sebastian Fanselow | 4-6,2-6 |
| ITF M15 Marburg | 2019/07/13 12:35 | Jesper De Jong v Ryan Nijboer | 6-3,6-3 |
| ITF M15 Marburg | 2019/07/12 11:40 | Martinez, Mirko v Ryan Nijboer | 3-6,1-6 |
| ITF M15 Marburg | 2019/07/11 17:50 | Yannik Steinegger v Ryan Nijboer | 6-7,1-6 |
| ITF M15 Marburg | 2019/07/10 11:00 | Joao Lucas Reis da Silva v Ryan Nijboer | 2-6,7-5,3-6 |
| Den Haag, Singles Qualifying M-ITF-NED-02A | 2019/07/07 10:00 | Zukas, Matias v Ryan Nijboer | 6-4,6-2 |
| Den Haag, Singles Qualifying M-ITF-NED-02A | 2019/07/05 10:55 | Yanais Laurent v Ryan Nijboer | 2-6,2-6 |
| Den Haag, Singles Qualifying M-ITF-NED-02A | 2019/07/04 11:25 | Daniel De Jonge v Ryan Nijboer | 3-6,0-6 |