| Challenger Ochsenhausen | 2021/03/30 16:56 | Szymon Malicki v Piotr Michalski | L | 3-1 |
| Challenger Ochsenhausen | 2021/03/22 17:40 | Piotr Michalski v Jiri Vrablik | L | 0-3 |
| Challenger Ochsenhausen | 2021/01/26 17:01 | Viacheslav Burov v Piotr Michalski | L | 3-0 |
| Challenger Ochsenhausen | 2021/01/22 17:20 | Piotr Michalski v Lei Kou | L | 0-3 |
| Challenger Ochsenhausen | 2020/03/06 17:40 | Piotr Michalski v Daniel Gorak | L | 0-3 |
| Challenger Ochsenhausen | 2019/09/12 16:36 | Piotr Michalski v Tomasz Lewandowski | L | 0-3 |
| Qatar Open XD | 2017/10/04 12:20 | Romain Ruiz v Piotr Michalski | L | 4-0 |