Stadium: Villas Rubin 4 Round: 62 Ground: Clay
| UTR Pro Tennis Series Zadar | 2021/11/21 10:30 | Deni Zmak v Domagoj Biljesko | 5-7,2-5 |
| UTR Pro Tennis Series Zadar | 2021/11/20 10:30 | Deni Zmak v Alen Rogic-Hadzalic | 4-6,6-3,5-1 |
| 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 |