| Season | Team | Competition | MP | G | A | Rating | ||
|---|---|---|---|---|---|---|---|---|
| 2025 | Yokohama FC | J1 League | 12 | 0 | 0 | 3 | 0 | 6.9 |
| 2024/2025 | Konyaspor | Super Lig | 24 | 0 | 0 | 3 | 0 | 7.1 |
| 2023/2024 | Konyaspor | Super Lig | 14 | 0 | 0 | 3 | 0 | 7.0 |
| 2023 | FC Tokyo | J1 League | 22 | 0 | 0 | 2 | 0 | 6.8 |
| 2022 | FC Tokyo | J1 League | 29 | 0 | 0 | 3 | 0 | 6.8 |
| 2021 | Vegalta Sendai | J1 League | 37 | 0 | 0 | 2 | 0 | 6.8 |
| 2020 | Vegalta Sendai | J1 League | 27 | 0 | 0 | 2 | 0 | 6.7 |
| 2019 | Vegalta Sendai | J1 League | 15 | 0 | 0 | 1 | 0 | 6.9 |
| 2018/2019 | Slask Wroclaw | Ekstraklasa | 35 | 0 | 0 | 2 | 0 | – |
| 2017/2018 | Slask Wroclaw | Ekstraklasa | 20 | 0 | 0 | 1 | 0 | – |
| 2016/2017 | Pogon Szczecin | Ekstraklasa | 20 | 0 | 0 | 1 | 0 | – |
| 2015/2016 | Pogon Szczecin | Ekstraklasa | 17 | 0 | 0 | 3 | 1 | – |
| 2014/2015 | Jagiellonia | Ekstraklasa | 3 | 0 | 0 | 0 | 1 | – |
| 2013/2014 | Jagiellonia | Ekstraklasa | 17 | 0 | 0 | 3 | 1 | – |
| 2012/2013 | Jagiellonia | Ekstraklasa | 14 | 0 | 0 | 3 | 1 | – |
| 2011/2012 | Warta Poznan | Division 1 | 1 | 0 | 0 | 1 | 0 | – |
| 2011/2012 | Jagiellonia | Ekstraklasa | 1 | 0 | 0 | 0 | 0 | – |
| Total | 308 | 0 | 0 | 33 | 4 | – | ||
| Date | From | To | Type | |
|---|---|---|---|---|
| - | Konyaspor | Yokohama FC | Free agent | |
| - | FC Tokyo | Konyaspor | Free agent | |
| 01 Sept 2022 | Vegalta Sendai | FC Tokyo | Free agent | |
| 07 Feb 2019 | Slask Wroclaw | Vegalta Sendai | Transfer | |
| 07 Jan 2017 | Pogon Szczecin | Slask Wroclaw | Free agent | |
| 07 Jan 2015 | Jagiellonia | Pogon Szczecin | Free agent | |
| - | Warta Poznan | Jagiellonia | Return from loan | |
| 01 Jan 2012 | Jagiellonia | Warta Poznan | Loan | |
| 07 Jan 2010 | Oborniki | Jagiellonia | Transfer | |
| 01 Jan 2009 | Szamotuly | Oborniki | Free agent |
J. Slowik career history shows progression across clubs and competitions, including club timeline, national team appearances and overall career totals.