| UTR Pro Tennis Series Zadar | 2021/11/18 14:30 | Drazen Petrovic v Dimitrov, Martin | 6-4,6-4 |
| UTR Pro Tennis Series Zadar | 2021/11/16 09:00 | Drazen Petrovic v Egor Matvievici | 6-0,7-6 |
| UTR Pro Tennis Series Zadar | 2021/11/15 09:00 | Drazen Petrovic v Myroslav Bondar | 6-2,6-1 |
| UTR Pro Tennis Series Zadar | 2021/10/02 07:00 | Borna Devald v Drazen Petrovic | 5-0 |
| UTR Pro Tennis Series Zadar | 2021/10/01 08:00 | Keisidis, Christos v Drazen Petrovic | 6-4,6-4 |
| UTR Pro Tennis Series Zadar | 2021/09/30 09:30 | Kekez, Duje v Drazen Petrovic | 3-6,4-5 |
| UTR Pro Tennis Series Zadar | 2021/09/29 08:00 | Janos Fekete v Drazen Petrovic | 4-6,6-4,1-6 |
| UTR Pro Tennis Series Zadar | 2021/09/27 11:30 | Stefanos Sakellaridis v Drazen Petrovic | 7-6,2-6,5-2 |
| UTR Pro Tennis Series Zadar | 2021/11/18 09:00 | Lawrence Bataljin v Domagoj Biljesko | 1-6,1-6 |
| UTR Pro Tennis Series Zadar | 2021/11/15 13:30 | Michalis Sakellaridis v Domagoj Biljesko | 1-6,1-6 |
| UTR Pro Tennis Series Zadar | 2021/11/14 14:30 | Pjevcevic, Petar v Domagoj Biljesko | 3-6,6-4,2-6 |
| ITF M25 Skopje | 2021/09/27 10:00 | Domagoj Biljesko v Vianello, Michele | 6-2,4-6,6-10 |
| Pirot, Singles M-ITF-SRB-05A | 2021/09/22 08:00 | Domagoj Biljesko v Manda, Calin | 1-6,4-6 |
| ITF M15 Zlatibor | 2021/09/16 08:00 | Domagoj Biljesko v Oleg Prihodko | 2-6,3-6 |
| ITF M15 Zlatibor | 2021/09/15 08:00 | Obrad Markovski v Domagoj Biljesko | 5-7,6-4,2-6 |
| ITF M15 Bad Waltersdorf | 2021/09/01 13:35 | Domagoj Biljesko v David Pichler | 2-6,6-7 |