| UTR Pro Tennis Series Zadar | 2021/10/02 11:30 | Stefanos Sakellaridis v Myroslav Bondar | 6-2,5-0 |
| UTR Pro Tennis Series Zadar | 2021/10/01 08:00 | Janos Fekete v Stefanos Sakellaridis | 6-1,6-6 |
| UTR Pro Tennis Series Zadar | 2021/09/30 09:30 | Christos Keisidis v Stefanos Sakellaridis | 4-6,6-4,6-4 |
| UTR Pro Tennis Series Zadar | 2021/09/28 12:30 | Duje Kekez v Stefanos Sakellaridis | 7-6,6-3 |
| UTR Pro Tennis Series Zadar | 2021/09/27 11:30 | Stefanos Sakellaridis v Drazen Petrovic | 7-6,2-6,5-2 |
| ITF M25 Pardubice | 2021/09/22 11:05 | Daniel Siniakov v Stefanos Sakellaridis | 6-3,6-2 |
| ITF M25 Pardubice | 2021/09/21 08:00 | Daniel Paty v Stefanos Sakellaridis | 3-6,3-6 |
| ITF M25 Pardubice | 2021/09/20 09:00 | Christopher Patzanovsky v Stefanos Sakellaridis | 6-4,1-6,7-10 |
| UTR Pro Tennis Series Zadar | 2021/10/02 07:00 | Maxim Krapivin v Mile Matic | 3-6,2-6 |
| UTR Pro Tennis Series Zadar | 2021/10/01 14:30 | Mile Matic v Lawrence Bataljin | 4-6,0-6 |
| UTR Pro Tennis Series Zadar | 2021/09/29 09:30 | Mile Matic v Filip Maric | 6-0,3-6,5-4 |
| UTR Pro Tennis Series Zadar | 2021/09/28 09:30 | Mile Matic v Petar Pjevcevic | 2-6,2-5 |
| UTR Pro Tennis Series Zadar | 2021/09/27 16:00 | Yanais Laurent v Mile Matic | 6-0,5-1 |
| ITF M15 Sibenik | 2021/04/18 08:00 | Giulio Colacioppo v Mile Matic | 3-6,6-2,10-3 |
| ITF M15 Opatija | 2021/03/22 10:10 | Mile Matic v Matyas Fuele | 6-1,3-6,5-10 |
| ITF M15 Opatija | 2021/03/21 08:00 | Pavle Daljev v Mile Matic | 6-7,6-7 |