Stadium: Court 1 (Center) Round: 26 Ground: Clay
| Den Haag, Singles Qualifying M-ITF-NED-02A | 2019/07/03 07:30 | Sabanin, Yan v Daniel De Jonge | 3-6,1-6 |
| Den Haag, Singles Qualifying M-ITF-NED-02A | 2019/07/02 07:30 | Daniel De Jonge v Erdbories, Tillmann | 6-4,3-6,10-3 |
| Den Haag, Singles Qualifying M-ITF-NED-02A | 2019/07/01 09:30 | Daniel De Jonge v Verstegen, Quin | 6-3,6-1 |
| ITF M25 Arlon | 2019/06/25 08:15 | Virgili, Adelchi v Daniel De Jonge | 6-3,6-2 |
| ITF M25 Arlon | 2019/06/24 09:35 | Munafo, Pedro v Daniel De Jonge | 2-6,3-6 |
| ITF M15 Troisdorf | 2019/05/09 11:20 | Daniel De Jonge v Schmitz, Constantin | 3-6,1-6 |
| ITF M15 Troisdorf | 2019/05/07 12:45 | Thomas Fancutt v Daniel De Jonge | 5-7,4-6 |
| ITF M15 Troisdorf | 2019/05/06 11:30 | van Der Horst, Tim v Daniel De Jonge | 3-6,6-1,9-11 |
| Den Haag, Singles Qualifying M-ITF-NED-02A | 2019/07/03 11:15 | Dijkhuizen, Marc v Ryan Nijboer | 3-6,6-3,2-6 |
| ITF M15 Alkmaar | 2019/06/26 13:25 | Andrea Bolla v Ryan Nijboer | 6-7,7-5,6-3 |
| Balatonalmadi, Singles Qualifying M-ITF-HUN-02A | 2019/06/20 08:00 | Ryan Nijboer v Georgii Kravchenko | 7-5,4-6,3-6 |
| Balatonalmadi, Singles Qualifying M-ITF-HUN-02A | 2019/06/19 09:50 | Ryan Nijboer v Naoki Tajima | 6-3,6-2 |
| ITF - M25 Sunderland | 2019/04/09 10:25 | Zizou Bergs v Ryan Nijboer | 6-2,4-6,6-1 |
| Bolton, Qualifications Simples M-ITF-GBR-03A | 2019/04/04 09:00 | Ryan Nijboer v Lenz, Julian | 3-6,6-7 |
| Bolton, Qualifications Simples M-ITF-GBR-03A | 2019/04/03 09:00 | George Houghton v Ryan Nijboer | 7-6,6-7,0-6 |
| ITF - M15 Sharm El Sheikh | 2019/02/27 12:00 | Pedro Vives Marcos v Ryan Nijboer | 7-6,2-6,7-6 |