| Challenger Ochsenhausen | 2019/11/08 13:55 | Jakub Kosowski v Petr David | W | 3-0 |
| Challenger Ochsenhausen | 2019/11/07 08:10 | Jakub Kosowski v Petr David | L | 1-3 |
| Challenger Ochsenhausen | 2019/11/04 19:00 | Jakub Kosowski v Petr David | L | 2-3 |
| Challenger Ochsenhausen | 2019/09/16 07:10 | Jakub Kosowski v Petr David | W | 3-1 |
| Challenger Ochsenhausen | 2019/07/30 11:40 | Petr David v Jakub Kosowski | L | 3-2 |
| Challenger Ochsenhausen | 2019/05/10 10:30 | Jakub Kosowski v Petr David | W | 3-1 |
| Challenger Ochsenhausen | 2018/12/19 09:30 | Petr David v Jakub Kosowski | W | 2-3 |
| Challenger Ochsenhausen | 2018/12/05 08:10 | Jakub Kosowski v Petr David | W | 3-2 |
| TT Elite Series | 2022/05/25 20:00 | Piotr Chodorski v Jakub Kosowski | W | 0-3 |
| TT Elite Series | 2022/05/25 19:00 | Krzysztof Guminski v Jakub Kosowski | W | 0-3 |
| TT Elite Series | 2022/05/25 16:30 | Maciej Makajew v Jakub Kosowski | W | 0-3 |
| TT Elite Series | 2022/05/25 15:30 | Jaroslaw Tomicki v Jakub Kosowski | W | 2-3 |
| TT Elite Series | 2022/05/25 13:30 | Artur Daniel v Jakub Kosowski | W | 1-3 |
| TT Elite Series | 2022/05/25 12:00 | Jakub Kosowski v Jaroslaw Tomicki | L | 1-3 |
| TT Elite Series | 2022/05/25 10:00 | Damian Swierczek v Jakub Kosowski | W | 0-3 |
| TT Elite Series | 2022/05/25 09:00 | Krzysztof Guminski v Jakub Kosowski | W | 0-3 |
| TT Elite Series | 2022/05/16 19:30 | Lukasz Jarocki v Petr David | W | 1-3 |
| TT Elite Series | 2022/05/16 18:30 | Maciej Makajew v Petr David | W | 0-3 |
| TT Elite Series | 2022/05/16 17:30 | Petr David v Arkadiusz Zuk | W | 3-1 |
| TT Elite Series | 2022/05/16 15:30 | Petr David v Przemyslaw Walaszek | L | 2-3 |
| TT Elite Series | 2022/05/16 14:30 | Piotr Chodorski v Petr David | L | 3-1 |
| TT Elite Series | 2022/05/16 12:00 | Petr David v Arkadiusz Zuk | W | 3-2 |
| TT Elite Series | 2022/05/16 10:00 | Piotr Chodorski v Petr David | W | 1-3 |
| TT Elite Series | 2022/05/16 09:00 | Lukasz Jarocki v Petr David | W | 0-3 |