Stadium: Court 4 Round: 44 Ground: Clay
| ITF M15 Sofia | 2021/07/04 06:30 | Frinzi, Mattia v Menelaos Efstathiou | 6-2,6-3 |
| ITF M15 Gaiba | 2021/06/11 11:55 | Frinzi, Mattia v Antoine Bellier | 3-6,5-7 |
| ITF M15 Gaiba | 2021/06/10 10:45 | Rodriguez, Cristian v Frinzi, Mattia | 3-6,2-6 |
| ITF M15 Gaiba | 2021/06/09 14:45 | Lorenzo Rottoli v Frinzi, Mattia | 3-6,1-6 |
| ITF M15 Gaiba | 2021/06/08 10:30 | Frinzi, Mattia v Ragazzi, Alessandro | 6-4,6-2 |
| ITF M15 Gaiba | 2021/06/07 14:50 | Frinzi, Mattia v Filippo Carpi | 6-2,6-2 |
| ITF - M15 Monastir | 2021/05/15 08:30 | Dougaz, Aziz v Frinzi, Mattia | 7-5,6-4 |
| ITF - M15 Monastir | 2021/05/14 10:00 | Frinzi, Mattia v Antoine Bellier | 5-7,7-6,6-4 |
| ITF M15 Sofia | 2021/07/04 06:30 | Ilya Snitari v Tommaso Compagnucci | 6-7,6-2,7-10 |
| ITF M25 Meerbusch | 2021/04/11 14:00 | Tommaso Compagnucci v Niels Visker | 3-6,1-6 |
| ITF - M15 Rovinj | 2021/03/14 08:30 | Milan Welte v Tommaso Compagnucci | 6-3,6-1 |
| ITF - M15 Porec | 2021/03/07 13:00 | Tommaso Compagnucci v Ignacio Carou | 7-6,4-6,7-10 |
| ITF - M25 Trente | 2020/02/26 16:50 | Tommaso Compagnucci v Nerman Fatic | 3-6,2-6 |
| ITF - M25 Trente | 2020/02/25 08:00 | Sandro Kopp v Tommaso Compagnucci | 4-6,2-6 |
| ITF - M25 Trente | 2020/02/24 09:00 | Tommaso Compagnucci v Micov, Stefan | 7-6,6-3 |
| Challenger Recanati Qual | 2017/07/01 11:35 | Roman Safiullin v Tommaso Compagnucci | 6-3,7-6 |