Stadium: Court 6 Round: 60 Ground: Hardcourt indoor
| ITF Croatia F1 | 2018/03/08 09:00 | Meis, Pascal v Kajin, Karlo | 6-3,6-1 |
| ITF Austria F5 | 2017/07/29 07:00 | Charles Broom v Kajin, Karlo | 6-0,6-4 |
| ITF Croatia F4 Qual | 2016/03/19 10:30 | Turcu, Mihnea Lorin Stefan v Kajin, Karlo | 1-6,6-2,6-0 |
| ITF Croatia F1 | 2016/02/27 10:30 | Kajin, Karlo v Edoardo Lavagno | 0-6,2-6 |
| ITF Germany F14 | 2017/10/11 13:10 | Schlageter, Justin v Marc-Andrea Huesler | 1-6,1-6 |
| ITF Germany F3 | 2017/01/22 11:30 | Schlageter, Justin v Recek, Dominik | 4-6,1-6 |
| ITF Germany F17 | 2016/11/03 10:00 | Schlageter, Justin v Hubert Hurkacz | 4-6,0-6 |
| ITF Germany F17 | 2016/11/02 10:00 | Schlageter, Justin v Mayer, Patrick | 6-4,5-7,7-5 |
| ITF Germany F15 | 2015/10/05 10:00 | Schlageter, Justin v Brinkmann, Nils | 3-6,1-6 |
| ITF Germany F15 | 2015/10/04 10:00 | Schlageter, Justin v Schmidt, Gabriel | 6-3,4-6,6-4 |