Round: 44 Ground: Clay
| ITF Poland F7 | 2018/08/11 11:00 | Kosinski, Patryk v Piatek, Mateusz | 5-7,2-6 |
| ITF Poland F6 | 2018/08/07 14:50 | Hajek, Petr v Piatek, Mateusz | 6-3,6-1 |
| ITF Poland F6 Qual | 2018/08/06 09:50 | Borkowski, Mikolaj v Piatek, Mateusz | 1-6,1-6 |
| ITF Poland F6 Qual | 2018/08/05 09:30 | Piatek, Mateusz v Andrzejczak, Bartlomiej | 6-1,6-2 |
| ITF Poland F4 | 2018/05/20 07:00 | Kucbel, Filip v Piatek, Mateusz | 6-4,4-6,6-3 |
| ITF Poland F3 | 2018/05/13 11:30 | Daciek, Patrick v Piatek, Mateusz | 7-6,6-1 |
| ITF Poland F2 | 2018/05/05 11:00 | Marse-Vidri, Jordi v Piatek, Mateusz | 6-7,6-2,6-2 |
| Tunisia F15, Singles Qualifying | 2018/04/15 09:00 | Robert, Quentin v Piatek, Mateusz | 6-2,6-1 |
| ITF Poland F6 Qual | 2018/08/04 08:00 | Juliusz Bienkiewicz v Zielinski, Jan | 3-6,3-6 |