Round: 25 Ground: Clay
| ITF Ukraine F4 | 2016/09/23 08:40 | Leon Schutt v Julian Onken | 6-4,6-2 |
| ITF Ukraine F4 | 2016/09/22 07:00 | Julian Onken v Vadim Alekseenko | 7-6,7-6 |
| ITF Ukraine F4 | 2016/09/21 08:20 | Julian Onken v Denys Gevel | 6-7,7-5,7-5 |
| ITF Ukraine F4 | 2016/09/20 10:20 | Julian Onken v Yurii Dzhavakian | 6-3,6-3 |
| Challenger Alphen Qual | 2016/09/04 14:05 | Sadio Doumbia v Julian Onken | 6-3,6-4 |
| Challenger Alphen Qual | 2016/09/04 08:45 | Kevin Griekspoor v Julian Onken | 5-7,4-6 |
| ITF Slovakia F3 | 2016/08/11 09:50 | Valentin Vacherot v Julian Onken | 7-6,6-3 |
| ITF Germany F8 Qual | 2016/07/18 10:00 | Julian Onken v Matvey Khomentovskiy | 4-6,4-6 |