Stadium: Court 2 Round: 54 Ground: Clay
| ITF M15 Telfs | 2019/07/09 09:00 | Mick Veldheer v Roko Horvat | 6-1,7-5 |
| ITF M15 Belgrade | 2019/07/03 09:55 | Roko Horvat v Ljubomir Celebic | 2-6,3-6 |
| ITF M15 Opatija | 2019/03/27 11:30 | Goran Markovic v Roko Horvat | 2-6,6-3,7-5 |
| ITF M15 Rovinj | 2019/03/20 10:30 | Andrea Basso v Roko Horvat | 6-0,6-3 |
| ITF M15 Porec | 2019/03/12 11:05 | Duje Kekez v Roko Horvat | 3-6,7-6,7-6 |
| ITF Croatia F2 | 2018/03/10 08:00 | Leopold Zima v Roko Horvat | 6-3,6-1 |
| ITF Croatia F1 | 2018/03/08 09:00 | Roko Horvat v Mate Delic | 1-6,3-6 |
| ITF Croatia F3 | 2017/03/18 08:00 | Dusan Rajic v Roko Horvat | 6-0,6-1 |
| ITF M15 Opatija | 2019/03/27 13:00 | Deni Zmak v Maxime Chazal | 3-6,6-7 |
| ITF M15 Opatija | 2019/03/26 10:50 | Samuele Ramazzotti v Deni Zmak | 3-6,4-6 |
| ITF M15 Opatija | 2019/03/25 12:35 | Deni Zmak v Darko Jandric | 6-0,6-3 |
| ITF M15 Porec | 2019/03/12 09:00 | Deni Zmak v Gabor Borsos | 3-6,1-6 |
| ITF M15 Porec | 2019/03/11 09:00 | Oleksii Krutykh v Deni Zmak | 3-6,7-6,4-10 |
| ITF Bosnia and Herzegovina F2 | 2018/05/24 11:40 | Elmar Ejupovic v Deni Zmak | 6-4,6-4 |
| ITF Bosnia and Herzegovina F2 | 2018/05/22 09:40 | Deni Zmak v Gorazd Srbljak | 4-6,6-3,6-4 |
| ITF Bosnia and Herzegovina F1 | 2018/05/16 12:30 | Deni Zmak v Tom Kocevar-Desman | 4-6,6-1,1-6 |