Stadium: Opatija 3 Round: 25 Ground: Clay
| ITF Croatia F3 | 2018/03/20 09:00 | Tommaso Gabrieli v Anze Arh | 6-1,6-2 |
| ITF Croatia F3 | 2018/03/19 12:30 | Tommaso Gabrieli v Karlo Kajin | 7-6,6-4 |
| ITF Croatia F3 | 2018/03/19 09:00 | Tommaso Gabrieli v Valentin Vanta | 7-5,4-6,6-2 |
| ITF Italy F3 | 2018/03/14 17:00 | Tommaso Gabrieli v Edoardo Eremin | 4-6,0-6 |
| ITF Italy F3 Qual | 2018/03/12 19:30 | Tommaso Gabrieli v Horst Rieder | 7-5,7-5 |
| ITF Italy F3 Qual | 2018/03/12 12:00 | Tommaso Gabrieli v Franco Capalbo | 4-6,7-6,7-5 |
| ITF Italy F2 | 2018/03/08 12:00 | Sumit Nagal v Tommaso Gabrieli | 6-4,6-7,6-3 |
| ITF Italy F2 Qual | 2018/03/03 13:30 | Tommaso Gabrieli v Deivids Juksa | 6-2,6-3 |
| ITF Croatia F2 | 2018/03/15 09:00 | Zdenek Kolar v Nik Razborsek | 6-7,4-6 |
| ITF Croatia F2 | 2018/03/14 10:35 | Sebastian Prechtel v Nik Razborsek | 1-6,6-4,4-6 |
| ITF Croatia F2 | 2018/03/12 11:00 | Nik Razborsek v Nicolo Crespi | 6-1,6-0 |
| ITF Croatia F2 | 2018/03/11 08:00 | Nik Razborsek v Matteo Fortini | 6-1,6-2 |
| ITF Croatia F1 | 2018/03/09 09:00 | Pavel Nejedly v Nik Razborsek | 7-5,6-2 |
| ITF Croatia F1 | 2018/03/08 11:30 | Nik Razborsek v Gabriel Schmidt | 6-2,4-6,10-7 |
| ITF Croatia F1 | 2018/03/07 08:00 | Nik Razborsek v Lorenzo Corioni | 6-0,6-1 |
| ITF Turkey F3 | 2018/01/24 13:00 | Vaclav Safranek v Nik Razborsek | 6-1,6-3 |