Stadium: Court 4 Round: 62 Ground: Clay
| 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 - M15 Monastir | 2021/04/11 10:00 | Jip Van Assendelft v Matuszewski, Piotr | 5-7,4-6 |
| ITF - M15 Monastir | 2021/04/05 09:00 | Ribeiro Marcondes, Igor v Matuszewski, Piotr | 7-6,6-3 |
| ITF - M15 Monastir | 2021/04/04 10:30 | Pereira, Miguel Fernando v Matuszewski, Piotr | 3-6,3-6 |
| ITF M25 Most | 2021/05/24 09:00 | Thurner, Dean v Ibrahim, Hasan | 0-6,1-6 |
| ITF M25 Most | 2021/05/23 14:00 | Katuch, Jakub v Ibrahim, Hasan | 1-6,4-6 |
| ITF M15 Troisdorf | 2021/05/09 10:00 | Boehler, Dominik v Ibrahim, Hasan | 6-3,6-3 |
| ITF M25 Poznan | 2020/08/24 12:30 | Ibrahim, Hasan v Lorens, Mikolaj | 5-7,2-6 |
| Coupe Davis | 2020/03/07 08:30 | Ibrahim, Hasan v Wishaya Trongcharoenchaikul | 6-7,6-3,6-7 |
| ITF - M15 Manacor | 2020/01/05 09:00 | Rafael Giotis v Ibrahim, Hasan | 6-0,6-3 |
| ITF - M15 Héraklion | 2019/12/08 10:00 | Adam Jones v Ibrahim, Hasan | 7-6,6-3 |
| ITF - M15 Héraklion | 2019/11/10 10:30 | Smits, Glenn v Ibrahim, Hasan | 6-3,6-2 |