| Challenger Ochsenhausen | 2022/01/07 18:00 | Patryk Zatowka v Tomasz Kotowski | W | 2-3 |
| Challenger Ochsenhausen | 2021/10/31 15:09 | Tomasz Tomaszuk v Tomasz Kotowski | W | 1-3 |
| Challenger Ochsenhausen | 2021/10/17 14:53 | SHiyu Sun v Tomasz Kotowski | L | 3-2 |
| Challenger Ochsenhausen | 2020/11/27 18:29 | Szymon Malicki v Tomasz Kotowski | L | 3-2 |
| Challenger Ochsenhausen | 2020/10/01 16:40 | Tomasz Kotowski v Shihao Wei | L | 2-3 |
| Challenger Ochsenhausen | 2020/09/29 16:00 | Marek Badowski v Tomasz Kotowski | L | 3-1 |
| Challenger Ochsenhausen | 2020/09/15 16:05 | Adam Dosz v Tomasz Kotowski | L | 3-0 |
| Polish Open | 2020/03/12 12:30 | Tomasz Kotowski v Satoshi Aida | W | 3-2 |