| ITF - M15 Rovinj | 2021/03/15 11:30 | Zmak, Deni v Rogic Hadzalic, Alen | 6-3,7-6 |
| UTR Pro Tennis Series Zadar | 2021/10/02 10:00 | Zmak, Deni v Yanais Laurent | 5-4 |
| UTR Pro Tennis Series Zadar | 2021/10/01 09:30 | Zmak, Deni v Michalis Sakellaridis | 6-2,7-5 |
| UTR Pro Tennis Series Zadar | 2021/09/30 12:00 | Zmak, Deni v Ivan Denisov | 2-6,6-2,6-5 |
| UTR Pro Tennis Series Zadar | 2021/09/29 15:00 | Ivan Liutarevich v Zmak, Deni | 4-6,6-4,6-6 |
| UTR Pro Tennis Series Zadar | 2021/09/28 11:00 | Maxim Krapivin v Zmak, Deni | 2-6,2-5 |
| UTR Pro Tennis Series Portoroz | 2021/08/29 08:00 | Kolisnyk, Olexiy v Zmak, Deni | 4-6,6-2,6-3 |
| UTR Pro Tennis Series Portoroz | 2021/08/28 07:00 | Novikov, Egor v Zmak, Deni | 2-6,7-6,1-5 |
| UTR Pro Tennis Series Portoroz | 2021/08/26 08:30 | Parshutin, Denis v Zmak, Deni | 3-6,0-6 |
| UTR Pro Tennis Series Zadar | 2021/10/02 10:00 | Janos Fekete v Rogic Hadzalic, Alen | 6-0,2-6,4-5 |
| UTR Pro Tennis Series Zadar | 2021/10/01 11:00 | Myroslav Bondar v Rogic Hadzalic, Alen | 1-6,1-5 |
| UTR Pro Tennis Series Zadar | 2021/09/30 08:00 | Kalender, Admir v Rogic Hadzalic, Alen | 2-6,6-4,5-6 |
| UTR Pro Tennis Series Zadar | 2021/09/28 08:00 | Borna Devald v Rogic Hadzalic, Alen | 3-6,4-5 |
| UTR Pro Tennis Series Zadar | 2021/09/27 15:30 | Rogic Hadzalic, Alen v Jose A R Rodriguez | 7-5,5-3 |
| ITF M15 Bad Waltersdorf | 2021/09/01 09:45 | Rogic Hadzalic, Alen v Lukas Neumayer | 6-7,0-6 |
| ITF M15 Bad Waltersdorf | 2021/08/31 08:20 | Rogic Hadzalic, Alen v Niklas Waldner | 1-6,6-1,10-3 |
| ITF M15 Bad Waltersdorf | 2021/08/27 08:00 | Rogic Hadzalic, Alen v Gabriel Decamps | 2-6,6-7 |