Stadium: AFT Court Round: 54 Ground: Clay
| ITF M15 Eupen | 2019/08/05 09:00 | Daniel De Jonge v Alexandre Aubriot | 4-6,6-2,10-5 |
| Brussels, Singles M-ITF-BEL-03A | 2019/07/31 10:00 | Daniel De Jonge v Gonzalo Villanueva | 3-6,1-6 |
| Brussels, Singles M-ITF-BEL-03A | 2019/07/30 09:25 | Daniel De Jonge v Admiraal, Amadatus | 6-2,6-0 |
| Brussels, Singles M-ITF-BEL-03A | 2019/07/29 12:45 | Daniel De Jonge v Vanwolleghem, Raynaud | 6-2,6-4 |
| Den Haag, Singles Qualifying M-ITF-NED-02A | 2019/07/04 11:25 | Daniel De Jonge v Ryan Nijboer | 3-6,0-6 |
| 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 M15 Eupen | 2019/08/05 09:00 | Onken, Julian v Wakita, Shunsuke | 6-0,6-2 |
| ITF Germany F16 | 2018/10/23 10:30 | Leopold Zima v Onken, Julian | 4-6,6-3,6-2 |
| ITF Belgium F9 | 2018/08/21 12:30 | Onken, Julian v Herman, Louis | 4-6,6-3,2-6 |
| ITF Germany F9 | 2018/07/22 16:30 | Onken, Julian v Maik Steiner | 2-6,6-2,4-6 |
| ITF Germany F9 | 2018/07/22 14:15 | Onken, Julian v Sharma, Arpit | 6-0,6-3 |
| ITF Croatia F1 | 2018/03/08 12:30 | Onken, Julian v Kocevar-Desman, Tom | 2-6,1-6 |
| ITF Croatia F1 | 2018/03/07 11:30 | Onken, Julian v Peters, Flemming | 6-4,7-5 |
| ITF Croatia F1 | 2018/03/07 08:00 | Onken, Julian v Erwin Troebinger | 6-4,6-0 |