Stadium: Court 1 (Center) Round: 25 Ground: Clay
| ITF M15 Kamen | 2019/06/27 11:40 | Nik Razborsek v Maiga, Riccardo | 5-7,6-7 |
| ITF M15 Kamen | 2019/06/25 10:40 | Nik Razborsek v Henri Squire | 6-2,2-6,6-2 |
| Kaltenkirchen, Singles Qualifying M-ITF-GER-05A | 2019/06/11 13:50 | Nik Razborsek v Damien Wenger | 6-4,1-6,1-6 |
| ITF - M25 Kiseljak | 2019/06/02 07:00 | Podzus, Martins v Nik Razborsek | 7-5,6-3 |
| ITF - M25 Kiseljak | 2019/05/30 12:10 | Nincevic, Frane v Nik Razborsek | 3-6,3-6 |
| ITF - M25 Kiseljak | 2019/05/28 14:15 | Gorazd Srbljak v Nik Razborsek | 3-6,1-6 |
| ITF M25 Jablonec Nad Nisou | 2019/05/23 08:00 | Nik Razborsek v Andrew Paulson | 4-6,3-6 |
| Tabarka, Singles Qualifying M-ITF-TUN-41A | 2019/04/19 09:00 | Nik Razborsek v Schmitz, Constantin | 0-6,2-6 |