Ground: Clay
| ITF Croatia F4 Qual | 2015/03/07 10:30 | Luka Ilic v Nik Razborsek | 1-6,1-6 |
| ITF Croatia F3 | 2015/03/05 09:00 | Michal Schmid v Nik Razborsek | 6-3,6-2 |
| ITF Croatia F3 | 2015/03/04 10:50 | Alessandro Colella v Nik Razborsek | 1-6,4-6 |
| ITF Croatia F3 | 2015/03/01 13:30 | Nik Razborsek v Andrei Patrui | 3-6,7-5,6-1 |
| ITF Croatia F3 | 2015/03/01 08:00 | Laurent Recouderc v Nik Razborsek | 7-5,2-6,3-6 |
| ITF Croatia F3 | 2015/02/28 08:00 | Nik Razborsek v Edoardo Lamberti | 6-1,6-3 |
| ITF Turkey F7 | 2015/02/17 07:30 | Nik Razborsek v Victor Vlad Cornea | 6-3,5-7,4-6 |
| ITF Turkey F7 | 2015/02/14 11:00 | Johannes Haerteis v Nik Razborsek | 5-7,4-6 |