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- First Name : Sebastian Oskar
- Last Name : Kowalczyk
- Team : Houston Dynamo
- Nationality : Poland
- Position : Midfielder
- Birth Place : Szczecin
- Birth Country : Poland
- Birthdate : 22/08/1998
- Age : 27
- Height : 169 cm
- Weight : 54 kg
| Team | Season |  |
 |
 |
 |
 |
 |
 |
|---|---|---|---|---|---|---|---|---|
| Houston Dynamo | 2025 | 1043 | 2 | 0 | 0 | 1 | 1 | 6.856250 |
| Houston Dynamo | 2024 | 2262 | 7 | 0 | 0 | 1 | 4 | 6.936363 |
| Pogon Szczecin | 2023/2024 | 21 | 0 | 0 | 0 | 0 | 6.200000 | |
| Houston Dynamo | 2023 | 358 | 1 | 0 | 0 | 1 | 0 | 6.675000 |
| Pogon Szczecin | 2022/2023 | 2171 | 3 | 0 | 0 | 6 | 6 | 6.793750 |
| Pogon Szczecin | 2021/2022 | 1990 | 4 | 0 | 0 | 3 | 6 | 7.133333 |
| Pogon Szczecin | 2020/2021 | 2114 | 7 | 0 | 0 | 3 | ||
| Pogon Szczecin | 2019/2020 | 3025 | 5 | 0 | 0 | 2 | ||
| Pogon Szczecin | 2018/2019 | 1595 | 7 | 0 | 0 | 2 | ||
| Pogon Szczecin | 2017/2018 | 180 | 3 | 0 | 0 | 0 | ||
| Pogon Szczecin | 2016/2017 | 139 | 0 | 0 | 0 | 0 |
