| UTR Pro Tennis Series Zadar | 2021/10/03 09:30 | Deni Zmak v Alen Rogic-Hadzalic | 6-4,7-5 |
| ITF M15 Rovinj | 2021/03/15 11:30 | Deni Zmak v Alen Rogic-Hadzalic | 6-3,7-6 |
| UTR Pro Tennis Series Zadar | 2021/11/19 09:00 | Deni Zmak v Christos Keisidis | 6-1,6-0 |
| UTR Pro Tennis Series Zadar | 2021/11/18 12:00 | Deni Zmak v Alexander Lazov | 6-3,6-7,5-3 |
| UTR Pro Tennis Series Zadar | 2021/11/16 13:00 | Deni Zmak v Graham Maassen | 4-6,6-1,6-2 |
| UTR Pro Tennis Series Zadar | 2021/11/15 09:00 | Jose A R Rodriguez v Deni Zmak | 1-6,1-5 |
| UTR Pro Tennis Series Copenhagen | 2021/10/23 08:30 | Simon Friis Soendergaard v Deni Zmak | 5-7,1-6 |
| UTR Pro Tennis Series Copenhagen | 2021/10/21 07:00 | Deni Zmak v Albert P Hansen | 6-1,6-1 |
| UTR Pro Tennis Series Copenhagen | 2021/10/20 08:30 | Deni Zmak v Jose Antonio Rodriguez Rodriguez | 6-1,5-2 |
| UTR Pro Tennis Series Copenhagen | 2021/10/19 07:00 | Deni Zmak v Arslan Temirhanov | 7-5,6-4 |
| UTR Pro Tennis Series Zadar | 2021/11/19 10:30 | Alen Rogic-Hadzalic v Jerko Brkic | 7-6,5-1 |
| UTR Pro Tennis Series Zadar | 2021/11/18 09:00 | Alen Rogic-Hadzalic v Vladan Tadic | 6-3,3-6,5-3 |
| UTR Pro Tennis Series Zadar | 2021/11/15 15:00 | Alen Rogic-Hadzalic v Oleksii Osadchyi | 6-0,5-1 |
| UTR Pro Tennis Series Zadar | 2021/11/14 12:00 | Alen Rogic-Hadzalic v Ivan Penev | 6-3,4-6,6-2 |
| UTR Pro Tennis Series Zadar | 2021/10/03 09:30 | Deni Zmak v Alen Rogic-Hadzalic | 6-4,7-5 |
| UTR Pro Tennis Series Zadar | 2021/10/02 10:00 | Janos Fekete v Alen Rogic-Hadzalic | 6-0,2-6,4-5 |
| UTR Pro Tennis Series Zadar | 2021/10/01 11:00 | Myroslav Bondar v Alen Rogic-Hadzalic | 1-6,1-5 |
| UTR Pro Tennis Series Zadar | 2021/09/30 08:00 | Admir Kalender v Alen Rogic-Hadzalic | 2-6,6-4,5-6 |