| Temporada | Equipo | Competición | PJ | G | A | Nota | ||
|---|---|---|---|---|---|---|---|---|
| 2025/2026 | Portsmouth | FA Cup | 1 | 0 | 0 | 0 | 0 | 6.7 |
| 2024/2025 | Portsmouth | FA Cup | 1 | 0 | 0 | 0 | 0 | – |
| 2024/2025 | Portsmouth | EFL Cup | 1 | 0 | 0 | 0 | 0 | 6.3 |
| 2023/2024 | Barnsley | EFL Trophy | 1 | 0 | 0 | 0 | 0 | 6.3 |
| 2023/2024 | Barnsley | FA Cup | 1 | 0 | 1 | 0 | 0 | 6.7 |
| 2023/2024 | Barnsley | EFL Cup | 1 | 0 | 0 | 0 | 0 | 6.7 |
| 2022/2023 | Barnsley | FA Cup | 2 | 0 | 1 | 0 | 0 | – |
| 2022/2023 | Barnsley | EFL Cup | 1 | 0 | 0 | 1 | 0 | 6.2 |
| 2021/2022 | Barnsley | FA Cup | 2 | 1 | 0 | 0 | 0 | – |
| 2021/2022 | Barnsley | EFL Cup | 1 | 0 | 0 | 0 | 0 | 7.3 |
| 2020/2021 | Barnsley | FA Cup | 2 | 0 | 0 | 0 | 0 | 6.5 |
| 2020/2021 | Barnsley | EFL Cup | 3 | 1 | 0 | 1 | 0 | 6.2 |
| 2019/2020 | Barnsley | FA Cup | 2 | 0 | 0 | 1 | 0 | – |
| 2019/2020 | Barnsley | EFL Cup | 1 | 0 | 0 | 0 | 0 | 6.7 |
| 2018/2019 | Barnsley | EFL Trophy | 4 | 1 | 0 | 0 | 0 | – |
| 2017/2018 | Bury | FA Cup | 1 | 0 | 0 | 1 | 0 | 6.8 |
| 2017/2018 | Bury | EFL Trophy | 4 | 0 | 0 | 1 | 0 | – |
| 2017/2018 | Huddersfield | EFL Cup | 1 | 0 | 0 | 0 | 0 | – |
| Total | 30 | 3 | 2 | 5 | 0 | – | ||
| Fecha | Desde | Hacia | Tipo | |
|---|---|---|---|---|
| 07 ene 2024 | Barnsley | Portsmouth | Free agent | |
| 08 ago 2018 | Huddersfield | Barnsley | Transfer | |
| 01 mar 2018 | Bury | Huddersfield | Return from loan | |
| - | Huddersfield | Bury | Loan |
J. Williams career history shows progression across clubs and competitions, including club timeline, national team appearances and overall career totals.