| Challenger Ochsenhausen | 2020/07/17 10:30 | Jakub Folwarski v Jakub Kosowski | L | 1-3 |
| Challenger Ochsenhausen | 2020/07/13 06:30 | Jakub Kosowski v Jakub Folwarski | L | 3-0 |
| Challenger Ochsenhausen | 2018/10/25 09:50 | Jakub Folwarski v Jakub Kosowski | W | 3-2 |
| Challenger Ochsenhausen | 2018/10/22 12:30 | Jakub Kosowski v Jakub Folwarski | L | 3-1 |
| Challenger Ochsenhausen | 2018/06/06 08:30 | Jakub Kosowski v Jakub Folwarski | L | 3-0 |
| Challenger Ochsenhausen | 2018/06/04 07:10 | Jakub Kosowski v Jakub Folwarski | L | 3-0 |
| Challenger Ochsenhausen | 2018/05/30 06:30 | Jakub Folwarski v Jakub Kosowski | L | 1-3 |
| Challenger Ochsenhausen | 2017/09/06 09:50 | Jakub Kosowski v Jakub Folwarski | W | 2-3 |
| TT Elite Series | 2022/08/18 07:00 | Jakub Folwarski v Adam Dosz | L | 2-3 |
| TT Elite Series | 2022/08/18 05:30 | Jakub Folwarski v Artur Grela | L | 0-3 |
| TT Elite Series | 2022/07/12 12:30 | Jakub Folwarski v Martin Olejnik | L | 2-3 |
| TT Elite Series | 2022/07/12 10:30 | Jakub Folwarski v Petr David | L | 1-3 |
| TT Elite Series | 2022/07/12 09:00 | Jakub Folwarski v Josef Braun | W | 3-1 |
| TT Elite Series | 2022/07/12 07:00 | Jakub Folwarski v Tomasz Lewandowski | W | 3-1 |
| TT Elite Series | 2022/07/12 05:30 | Jakub Folwarski v Michal Malachowski | W | 3-0 |
| TT Elite Series | 2022/07/11 12:30 | Michal Malachowski v Jakub Folwarski | W | 1-3 |
| TT Elite Series | 2022/08/18 08:00 | Jakub Kosowski v Petr David | W | 3-2 |
| TT Elite Series | 2022/08/18 06:30 | Jakub Kosowski v Adrian Wiecek | W | 3-2 |
| TT Elite Series | 2022/08/15 20:00 | Piotr Chodorski v Jakub Kosowski | L | 3-2 |
| TT Elite Series | 2022/08/15 19:00 | Adam Dosz v Jakub Kosowski | L | 3-2 |
| TT Elite Series | 2022/08/15 16:25 | Petr David v Jakub Kosowski | W | 2-3 |
| TT Elite Series | 2022/08/15 15:30 | Artur Grela v Jakub Kosowski | L | 3-1 |
| TT Elite Series | 2022/08/15 13:30 | Adrian Wiecek v Jakub Kosowski | W | 2-3 |
| TT Elite Series | 2022/08/15 11:30 | Slawomir Dosz v Jakub Kosowski | L | 3-1 |