| TT Elite Series | 05/19 14:00 | - | Jakub Kosowski v Damian Wederlich | W | 3-1 | |
| TT Elite Series | 05/19 11:30 | - | Jakub Kosowski v Przemyslaw Walaszek | L | 0-3 | |
| TT Elite Series | 05/19 10:00 | - | Jakub Kosowski v Piotr Chodorski | W | 3-2 | |
| TT Elite Series | 05/19 08:30 | - | Jakub Kosowski v Antoni Witkowski | W | 3-2 | |
| TT Elite Series | 05/19 07:00 | - | Damian Wederlich v Jakub Kosowski | W | 2-3 | |
| TT Elite Series | 05/19 06:00 | - | Jakub Kosowski v Jaroslaw Tomicki | W | 3-0 | |
| TT Elite Series | 05/18 20:00 | - | Maciej Makajew v Jakub Kosowski | W | 0-3 | |
| TT Elite Series | 05/18 19:00 | - | Antoni Witkowski v Jakub Kosowski | W | 1-3 | |
| TT Elite Series | 05/18 16:30 | - | Jaroslaw Tomicki v Jakub Kosowski | W | 1-3 | |
| TT Elite Series | 05/18 15:30 | - | Milosz Przybylik v Jakub Kosowski | L | 3-1 | |
| TT Elite Series | 05/18 13:30 | - | Piotr Chodorski v Jakub Kosowski | L | 3-1 | |
| TT Elite Series | 05/18 04:30 | - | Jakub Kosowski v Lukasz Matlag | W | 3-0 | |
| TT Elite Series | 05/18 02:30 | - | Jakub Kosowski v Milosz Przybylik | L | 1-3 | |
| TT Elite Series | 05/18 01:00 | - | Jakub Kosowski v Marcin Jadczyk | L | 2-3 | |
| TT Elite Series | 05/17 23:00 | - | Jakub Kosowski v Damian Korczak | W | 3-0 | |
| TT Elite Series | 05/17 21:30 | - | Jakub Kosowski v Arkadiusz Mugowski | W | 3-0 | |
| TT Elite Series | 05/10 04:00 | - | Adam Gdula v Jakub Kosowski | W | 0-3 | |
| TT Elite Series | 05/10 03:00 | - | Michal Malachowski v Jakub Kosowski | W | 0-3 | |
| TT Elite Series | 05/10 00:30 | - | Szymon Kolasa v Jakub Kosowski | W | 0-3 | |
| TT Elite Series | 05/09 23:30 | - | Marcin Jadczyk v Jakub Kosowski | L | 3-0 | |
| TT Elite Series | 05/09 21:30 | - | Damian Korczak v Jakub Kosowski | W | 2-3 | |
| TT Elite Series | 05/09 11:30 | - | Jakub Kosowski v Piotr Chodorski | L | 0-3 | |
| TT Elite Series | 05/09 10:00 | - | Jakub Kosowski v Artur Bialek | W | 3-2 | |
| TT Elite Series | 05/09 08:30 | - | Jakub Kosowski v Grzegorz Felkel | W | 3-2 | |
| TT Elite Series | 05/09 07:00 | - | Michal Malachowski v Jakub Kosowski | W | 1-3 | |
| TT Elite Series | 05/09 06:00 | - | Jakub Kosowski v Maciej Makajew | W | 3-1 | |
| TT Elite Series | 05/06 12:00 | - | Artur Bialek v Jakub Kosowski | W | 0-3 | |
| TT Elite Series | 05/06 11:00 | - | Mateusz Golebiowski v Jakub Kosowski | L | 3-0 | |
| TT Elite Series | 05/06 08:30 | - | Tomasz Lewandowski v Jakub Kosowski | L | 3-1 | |
| TT Elite Series | 05/06 07:30 | - | Taehyun Kim v Jakub Kosowski | L | 3-1 |