Stadium: Court 1 Round: 25 Ground: Carpet indoor
| ITF Croatia F2 | 2018/03/11 08:00 | Kocevar-Desman, Tom v Leopold Zima | 6-3,6-2 |
| ITF Croatia F2 | 2018/03/10 08:00 | Leopold Zima v Roko Horvat | 6-3,6-1 |
| ITF Germany F14 | 2017/10/09 10:00 | Leopold Zima v Jonas Trinker | 6-4,2-6,6-7 |
| ITF Germany F14 | 2017/10/08 11:30 | Sude, Jakob v Leopold Zima | 3-6,2-6 |
| ITF Germany F14 | 2017/10/08 07:00 | Leopold Zima v Vladusic, Nenad | 6-4,6-2 |
| ITF Germany F3 | 2017/01/23 08:30 | Leopold Zima v Brinkmann, Nils | 5-7,5-7 |
| ITF Germany F3 | 2017/01/22 11:30 | Leopold Zima v Keist, Luca | 6-7,6-4,7-5 |
| Challenger Eckental Qual | 2016/10/29 09:05 | Jurij Rodionov v Leopold Zima | 6-2,6-4 |
| 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 |
| ITF Pakistan F3 | 2017/12/21 06:20 | Onken, Julian v Lopez Perez | 2-6,4-6 |
| ITF Pakistan F3 | 2017/12/20 05:00 | Onken, Julian v Luka Pavlovic | 6-1,3-6,6-3 |