Stadium: Eden 2 Round: 62 Ground: Clay
| ITF M15 Heraklion | 2020/11/08 12:00 | Josip Krstanovic v Sebastian Gima | 6-7,2-6 |
| ITF M15 Heraklion | 2020/10/26 07:30 | Riccardo Balzerani v Josip Krstanovic | 4-6,7-6,10-7 |
| ITF M15 Heraklion | 2020/10/25 07:30 | Daniel O'Neill v Josip Krstanovic | 0-6,3-6 |
| Adriatic Tennis Series | 2020/06/15 16:45 | Carlos Gomez-Herrera v Josip Krstanovic | 1-6,6-3,10-5 |
| ITF M25 Sunderland | 2020/02/24 10:00 | Josip Krstanovic v Patrick Foley | 1-6,1-6 |
| ITF M25 Sunderland | 2020/02/23 11:30 | Mats Rosenkranz v Josip Krstanovic | 6-3,1-6,8-10 |
| ITF M25 Glasgow | 2020/02/16 15:15 | Wojciech Marek v Josip Krstanovic | 6-4,6-4 |
| ITF M25 Barnstaple | 2020/02/09 12:45 | Josip Krstanovic v Tom Hands | 1-6,6-1,16-18 |
| ITF M25 Trento | 2020/02/26 12:50 | Mattia Frinzi v Mick Veldheer | 1-6,4-6 |
| ITF M25 Trento | 2020/02/24 11:20 | Mattia Frinzi v Maris Sipkovs | 6-0,6-0 |
| ITF M15 Monastir | 2019/11/30 09:00 | Mattia Frinzi v Jan Satral | 6-7,3-6 |
| ITF M15 Monastir | 2019/11/29 08:30 | Kai Wehnelt v Mattia Frinzi | 3-6,5-7 |
| ITF M15 Monastir | 2019/11/28 10:20 | Gauthier Onclin v Mattia Frinzi | 2-6,3-6 |
| ITF M15 Monastir | 2019/11/27 10:35 | Mattia Frinzi v Francesco Forti | 6-4,6-2 |
| ITF M15 Monastir | 2019/11/25 13:00 | Guillaume Dermiens v Mattia Frinzi | 6-7,1-6 |
| ITF M15 Monastir | 2019/11/25 08:00 | Mohamed Anouar Braham v Mattia Frinzi | 2-6,1-6 |