| TT Elite Series | 2022/08/19 10:30 | Jakub Folwarski v Jakub Kosowski | L | 3-2 |
| TT Elite Series | 2022/08/18 09:00 | Jakub Folwarski v Jakub Kosowski | W | 1-3 |
| Challenger - Ochsenhausen | 2020/07/17 10:30 | Jakub Folwarski v Jakub Kosowski | W | 1-3 |
| Challenger - Ochsenhausen | 2020/07/13 06:30 | Jakub Kosowski v Jakub Folwarski | W | 3-0 |
| Challenger - Ochsenhausen | 2018/10/25 09:50 | Jakub Folwarski v Jakub Kosowski | L | 3-2 |
| Challenger - Ochsenhausen | 2018/10/22 12:30 | Jakub Kosowski v Jakub Folwarski | W | 3-1 |
| Challenger - Ochsenhausen | 2018/06/06 08:30 | Jakub Kosowski v Jakub Folwarski | W | 3-0 |
| Challenger - Ochsenhausen | 2018/06/04 07:10 | Jakub Kosowski v Jakub Folwarski | W | 3-0 |
| TT Elite Series | 2023/07/19 13:35 | Jakub Kosowski v Michal Benes | L | 1-3 |
| TT Elite Series | 2023/07/19 12:25 | Ondrej Bajger v Jakub Kosowski | W | 2-3 |
| TT Elite Series | 2023/07/19 11:35 | Jakub Kosowski v Adam Dosz | L | 0-3 |
| TT Elite Series | 2023/07/19 10:25 | Michal Benes v Jakub Kosowski | W | 0-3 |
| TT Elite Series | 2023/07/19 09:35 | Adam Dosz v Jakub Kosowski | L | 3-1 |
| TT Elite Series | 2023/07/19 07:35 | Antoni Witkowski v Jakub Kosowski | L | 3-1 |
| TT Elite Series | 2023/07/19 06:50 | Ondrej Bajger v Jakub Kosowski | L | 3-1 |
| TT Elite Series | 2023/07/19 05:10 | Piotr Chodorski v Jakub Kosowski | L | 3-0 |
| TT Elite Series | 2023/07/19 14:00 | Ondrej Bajger v Jakub Folwarski | W | 0-3 |
| TT Elite Series | 2023/07/19 13:15 | Jakub Folwarski v Adam Dosz | L | 1-3 |
| TT Elite Series | 2023/07/19 12:00 | Jakub Folwarski v Piotr Chodorski | L | 2-3 |
| TT Elite Series | 2023/06/30 16:10 | Adrian Wiecek v Jakub Folwarski | L | 3-2 |
| TT Elite Series | 2023/06/30 15:20 | Slawomir Dosz v Jakub Folwarski | W | 0-3 |
| TT Elite Series | 2023/06/30 13:30 | Amirreza Abbasi v Jakub Folwarski | W | 2-3 |
| TT Elite Series | 2023/06/30 12:50 | Piotr Chodorski v Jakub Folwarski | W | 1-3 |
| TT Elite Series | 2023/06/30 11:20 | Adam Dosz v Jakub Folwarski | L | 3-1 |