Stadium: Court 1 Round: 62 Ground: Clay
| ITF Bosnia and Herzegovina F1 Qual | 2018/05/13 10:30 | Deni Zmak v Petar Pjevcevic | 6-1,6-0 |
| ITF Croatia F3 | 2018/03/23 12:35 | Matteo Viola v Deni Zmak | 3-6,6-3,6-2 |
| ITF Croatia F3 | 2018/03/22 11:30 | Kai Lemstra v Deni Zmak | 6-4,1-6,4-6 |
| ITF Croatia F3 | 2018/03/21 12:20 | Deni Zmak v David Perez Sanz | 6-3,6-0 |
| ITF Croatia F3 | 2018/03/20 08:30 | Ivan Sabanov v Deni Zmak | 2-6,3-6 |
| ITF Croatia F3 | 2018/03/19 14:00 | Deni Zmak v Andres Gabriel Ciurletti | 6-2,6-2 |
| ITF Croatia F3 | 2018/03/19 11:00 | Andre Biro v Deni Zmak | 2-6,3-6 |
| ITF Croatia F2 | 2018/03/13 08:00 | Tom Kocevar-Desman v Deni Zmak | 6-3,3-6,6-4 |