Stadium: Court 8 Round: 62 Ground: Clay
| ITF Germany F9 | 2018/07/22 14:15 | Julian Onken v Arpit Sharma | 6-0,6-3 |
| ITF Croatia F1 | 2018/03/08 12:30 | Julian Onken v Tom Kocevar-Desman | 2-6,1-6 |
| ITF Croatia F1 | 2018/03/07 11:30 | Julian Onken v Flemming Peters | 6-4,7-5 |
| ITF Croatia F1 | 2018/03/07 08:00 | Julian Onken v Erwin Troebinger | 6-4,6-0 |
| ITF Pakistan F3 | 2017/12/21 06:20 | Julian Onken v Enrique Lopez-Perez | 2-6,4-6 |
| ITF Pakistan F3 | 2017/12/20 05:00 | Julian Onken v Luka Pavlovic | 6-1,3-6,6-3 |
| ITF Pakistan F3 | 2017/12/19 05:00 | Julian Onken v Aqeel Khan | 6-2,6-2 |
| ITF Pakistan F2 | 2017/12/15 05:00 | Ivan Nedelko v Julian Onken | 7-5,6-1 |
| ITF Germany F9 | 2018/07/22 11:00 | Lucas Hellfritsch v Maik Steiner | 6-7,3-6 |
| ITF Germany F8 Qual | 2018/07/15 08:00 | Maik Steiner v Nikolas Walterscheid-Tukic | 4-6,2-6 |
| ITF Germany F8 Qual | 2017/07/17 11:00 | Lukas Ruepke v Maik Steiner | 6-3,6-0 |
| ITF Germany F7 | 2017/07/09 08:00 | Quentin Folliot v Maik Steiner | 6-3,6-2 |