Stadium: Eden 12 Round: 62 Ground: Clay
| ITF M15 Antalya | 2021/01/18 07:00 | Josip Krstanovic v Federico Arnaboldi | 3-6,4-6 |
| ITF M15 Rovinj | 2021/03/14 08:30 | Josip Krstanovic v Mattia Frinzi | 6-2,7-6 |
| ITF M15 Porec | 2021/03/07 12:00 | Damien Wenger v Josip Krstanovic | 7-6,6-0 |
| ITF M15 Antalya | 2021/02/21 13:00 | Josip Krstanovic v Calin Manda | 2-6,3-6 |
| ITF M15 Antalya | 2021/01/18 07:00 | Josip Krstanovic v Federico Arnaboldi | 3-6,4-6 |
| ITF M15 Antalya | 2021/01/17 09:00 | Josip Krstanovic v Andrea Fiorentini | 6-0,6-4 |
| ITF M15 Antalya | 2021/01/10 06:00 | Calin Manda v Josip Krstanovic | 6-3,6-2 |
| ITF M15 Antalya | 2021/01/04 07:00 | Josip Krstanovic v Stefanos Sakellaridis | 3-6,6-7 |
| ITF M15 Antalya | 2021/01/03 07:00 | Josip Krstanovic v Enes Donmezer | 6-1,7-5 |
| ITF M15 Rovinj | 2021/03/14 08:30 | Mate Voros v Federico Arnaboldi | 1-6,1-6 |
| ITF M15 Porec | 2021/03/10 12:40 | Antoine Cornut-Chauvinc v Federico Arnaboldi | 6-7,6-3,6-2 |
| ITF M15 Porec | 2021/03/09 10:40 | Federico Arnaboldi v Giacomo Dambrosi | 6-3,6-1 |
| ITF M15 Porec | 2021/03/08 13:00 | Federico Arnaboldi v Vladimir Filip | 6-3,6-2 |
| ITF M15 Porec | 2021/03/07 12:00 | Federico Arnaboldi v Yvo Panak | 6-0,0-6,10-6 |
| ITF M15 Antalya | 2021/02/16 07:00 | Pietro Rondoni v Federico Arnaboldi | 6-4,6-3 |
| ITF M15 Antalya | 2021/02/14 12:00 | Daniel Rincon v Federico Arnaboldi | 3-6,3-6 |
| ITF M15 Antalya | 2021/02/13 06:55 | Agustin Velotti v Federico Arnaboldi | 6-4,6-1 |