| ITF Poland F3 | 2018/05/16 08:00 | Marek, Wojciech v Matuszewski, Piotr | 6-2,4-6,6-1 |
| ITF M25 Casinalbo | 2021/07/05 07:30 | Matuszewski, Piotr v Gabriel Roveri Sidney | 6-2,4-6,6-10 |
| ITF M25 Casinalbo | 2021/07/04 08:45 | Matuszewski, Piotr v Favero, Lorenzo | 6-4,6-4 |
| ITF M25 Most | 2021/05/25 08:00 | Matuszewski, Piotr v Ibrahim, Hasan | 6-2,2-6,9-11 |
| ITF M25 Most | 2021/05/24 08:00 | Matuszewski, Piotr v Theo Arribage | 7-5,7-5 |
| ITF M25 Most | 2021/05/23 08:00 | Matuszewski, Piotr v Novansky, Michal | 6-4,1-6,12-10 |
| ITF M25 Prague | 2021/05/09 07:30 | Nejedly, Pavel v Matuszewski, Piotr | 7-5,6-4 |
| ITF - M15 Monastir | 2021/04/12 12:30 | Matuszewski, Piotr v Sean Hodkin | 1-6,0-6 |
| ITF - M15 Monastir | 2021/04/12 08:00 | Yitbarek, Simon v Matuszewski, Piotr | 1-6,2-6 |
| ITF M25 Wroclaw | 2021/06/29 14:20 | Bega, Alessandro v Marek, Wojciech | 6-2,6-4 |
| ITF M15 Novomoskovsk | 2021/06/03 19:20 | Marek, Wojciech v Oleksii Krutykh | 0-6,5-7 |
| ITF M15 Novomoskovsk | 2021/05/27 07:50 | Marek, Wojciech v Oleksii Krutykh | 0-6,3-6 |
| ITF M15 Novomoskovsk | 2021/05/26 13:05 | Oleg Prihodko v Marek, Wojciech | 4-6,7-6,3-6 |
| Coupe Davis | 2021/03/06 11:20 | Marek, Wojciech v Arevalo-Gonzalez, Marcelo | 4-6,2-6 |
| ITF M15 Nur-Sultan | 2021/02/10 03:55 | Marek, Wojciech v Enrico Dalla Valle | 4-6,2-6 |
| ITF M15 Nur-Sultan | 2021/02/05 06:00 | Marek, Wojciech v Dembek, Michal | 1-6,4-6 |
| ITF M15 Nur-Sultan | 2021/02/04 06:30 | Khomich, Aleksei v Marek, Wojciech | 3-6,4-6 |