Stadium: Court 21 Round: 62 Ground: Clay
| ITF - M15 Antalya | 2021/04/12 07:00 | Giuseppe La Vela v Loncar, Stefan | 4-6,2-6 |
| ITF - M15 Antalya | 2021/04/11 07:00 | Veremeychuk, Danylo v Loncar, Stefan | 3-6,2-6 |
| ITF - M15 Opatija | 2021/03/22 13:15 | Loncar, Stefan v Frinzi, Mattia | 3-6,6-7 |
| ITF - M15 Opatija | 2021/03/21 13:00 | Vukovic, Milos v Loncar, Stefan | 2-6,6-4,7-10 |
| ITF - M25 La Nucia | 2021/03/14 14:00 | Kuzey Cekirge v Loncar, Stefan | 6-3,6-2 |
| ITF M25 Villena | 2021/01/31 10:30 | Loncar, Stefan v Trapeznikov, Zakhar | 2-6,2-6 |
| ITF M15 Cairo | 2020/12/06 07:00 | Peranamallur, Chandrasekhar Vignesh v Loncar, Stefan | 6-4,7-6 |
| ITF M15 Cairo | 2020/11/29 08:00 | Hamed, Mohab v Loncar, Stefan | 6-2,6-4 |
| ITF - M15 Antalya | 2021/04/12 07:00 | Gianmarco Ferrari v Sebastian Gima | 5-7,6-3,10-5 |
| ITF - M15 Antalya | 2021/04/11 07:00 | Gianmarco Ferrari v Cetin, Guney Ege | 6-1,6-2 |
| ITF - M15 Opatija | 2021/03/21 11:00 | Francesco Passaro v Gianmarco Ferrari | 6-4,6-0 |
| ITF - M15 Rovinj | 2021/03/15 11:30 | Gianmarco Ferrari v Dambrosi, Giacomo | 3-6,2-6 |
| ITF - M15 Rovinj | 2021/03/14 08:30 | Gianmarco Ferrari v Alexandre Aubriot | 6-2,6-1 |
| ITF - M15 Porec | 2021/03/08 11:30 | Donati, Matteo v Gianmarco Ferrari | 6-0,6-1 |
| ITF - M15 Porec | 2021/03/07 11:00 | Gabriele Moghini v Gianmarco Ferrari | 6-7,3-6 |
| ITF - M15 Antalya | 2021/02/14 12:00 | Gianmarco Ferrari v Matheus P De Almeida | 7-6,6-2 |