Estádio: Court 2 Round: 54 Ground: Clay
| ITF - M25 Casinalbo | 2021/07/04 08:45 | Piotr Matuszewski v Lorenzo Favero | 6-4,6-4 |
| ITF - M25 Most | 2021/05/25 08:00 | Piotr Matuszewski v Hasan Ibrahim | 6-2,2-6,9-11 |
| ITF - M25 Most | 2021/05/24 08:00 | Piotr Matuszewski v Theo Arribage | 7-5,7-5 |
| ITF - M25 Most | 2021/05/23 08:00 | Piotr Matuszewski v Michal Novansky | 6-4,1-6,12-10 |
| ITF - M25 Praga | 2021/05/09 07:30 | Pavel Nejedly v Piotr Matuszewski | 7-5,6-4 |
| ITF - M15 Monastir | 2021/04/12 12:30 | Piotr Matuszewski v Sean Hodkin | 1-6,0-6 |
| ITF - M15 Monastir | 2021/04/12 08:00 | Simon Yitbarek v Piotr Matuszewski | 1-6,2-6 |
| ITF - M15 Monastir | 2021/04/11 10:00 | Jip Van Assendelft v Piotr Matuszewski | 5-7,4-6 |
| ITF - M25 Casinalbo | 2021/07/04 13:00 | Gabriel Roveri Sidney v Carlo Alberto Fossati | 7-5,7-6 |
| ITF - M15 Antália | 2021/06/20 07:00 | Simeon Terziev v Gabriel Roveri Sidney | 4-6,7-6,10-8 |
| ITF - M15 Antália | 2021/06/13 07:30 | Gabriel Roveri Sidney v Ignacio Carou | 2-6,3-6 |
| ITF - M15 Antália | 2021/05/17 07:00 | Sandro Kopp v Gabriel Roveri Sidney | 6-2,6-3 |
| ITF - M15 Antália | 2021/05/16 07:00 | Umut Akkoyun v Gabriel Roveri Sidney | 4-6,2-6 |
| ITF - M15 Antália | 2021/05/10 07:00 | Gabriel Roveri Sidney v Vladimir Korolev | 4-6,2-6 |
| ITF - M15 Antália | 2021/05/09 07:00 | Gabriel Roveri Sidney v Ali Alshati | 6-4,6-1 |
| ITF - M15 Antália | 2021/05/02 06:00 | Gabriel Roveri Sidney v Iacopo Sada | 3-6,0-6 |