Stadium: Court 3 Round: 44 Ground: Clay
| ITF - M15 Sofia | 2021/07/05 07:00 | Mattia Frinzi v Tommaso Compagnucci | 6-7,7-5,11-9 |
| ITF - M15 Sofia | 2021/07/04 06:30 | Mattia Frinzi v Menelaos Efstathiou | 6-2,6-3 |
| ITF - M15 Gaiba | 2021/06/11 11:55 | Mattia Frinzi v Antoine Bellier | 3-6,5-7 |
| ITF - M15 Gaiba | 2021/06/10 10:45 | Cristian Rodriguez v Mattia Frinzi | 3-6,2-6 |
| ITF - M15 Gaiba | 2021/06/09 14:45 | Lorenzo Rottoli v Mattia Frinzi | 3-6,1-6 |
| ITF - M15 Gaiba | 2021/06/08 10:30 | Mattia Frinzi v Alessandro Ragazzi | 6-4,6-2 |
| ITF - M15 Gaiba | 2021/06/07 14:50 | Mattia Frinzi v Filippo Carpi | 6-2,6-2 |
| ITF - M15 Monastir | 2021/05/15 08:30 | Mohamed Aziz Dougaz v Mattia Frinzi | 7-5,6-4 |
| ITF - M15 Sofia | 2021/07/05 07:00 | Stefanos Sakellaridis v Aristotelis Thanos | 2-6,6-7 |
| ITF - M15 Sofia | 2021/07/04 07:30 | Benjamin Niv v Aristotelis Thanos | 0-6,4-6 |
| ITF - M15 Heraklion | 2021/06/10 07:30 | Alexis Musialek v Aristotelis Thanos | 6-4,6-1 |
| ITF - M15 Heraklion | 2021/06/09 09:55 | Aristotelis Thanos v Kelsey Stevenson | 6-2,7-5 |
| ITF - M15 Heraklion | 2021/06/01 08:00 | Aristotelis Thanos v Martin Breysach | 3-6,3-6 |
| ITF - M15 Heraklion | 2021/05/25 06:30 | Aristotelis Thanos v Lorenzo Joaquin Rodriguez | 6-2,6-0 |
| ITF - M15 Heraklion | 2021/05/23 10:00 | Aristotelis Thanos v Stephanos Schinas | 5-7,6-1,10-7 |
| ITF - M15 Heraklion | 2021/05/20 06:30 | Yuta Shimizu v Aristotelis Thanos | 3-6,6-1,7-6 |