| Temporada | Equipo | Competición | PJ | G | A | Nota | ||
|---|---|---|---|---|---|---|---|---|
| 2025/2026 | Chesterfield | FA Cup | 1 | 0 | 0 | 0 | 0 | 6.2 |
| 2025/2026 | Chesterfield | EFL Trophy | 1 | 0 | 0 | 0 | 0 | – |
| 2025/2026 | Chesterfield | EFL Cup | 1 | 0 | 0 | 0 | 0 | 6.2 |
| 2024/2025 | Chesterfield | FA Cup | 2 | 2 | 0 | 0 | 0 | – |
| 2024/2025 | Chesterfield | EFL Trophy | 3 | 0 | 0 | 1 | 0 | 6.7 |
| 2023/2024 | Chesterfield | FA Cup | 4 | 1 | 0 | 0 | 0 | – |
| 2022/2023 | MK Dons | EFL Trophy | 2 | 1 | 0 | 0 | 0 | 6.6 |
| 2022/2023 | MK Dons | FA Cup | 2 | 1 | 0 | 0 | 0 | – |
| 2022/2023 | MK Dons | EFL Cup | 2 | 0 | 0 | 0 | 0 | 6.3 |
| 2021/2022 | Rotherham | FA Cup | 1 | 0 | 0 | 0 | 0 | 7.2 |
| 2021/2022 | Rotherham | EFL Trophy | 4 | 1 | 2 | 0 | 0 | 7.0 |
| 2021/2022 | Sunderland | EFL Cup | 1 | 0 | 0 | 0 | 0 | 6.2 |
| 2020/2021 | Sunderland | EFL Trophy | 1 | 0 | 0 | 0 | 0 | 6.2 |
| 2020/2021 | Sunderland | FA Cup | 1 | 0 | 0 | 0 | 0 | – |
| 2020/2021 | Sunderland | EFL Cup | 1 | 0 | 0 | 0 | 0 | 6.7 |
| 2019/2020 | Sunderland | FA Cup | 2 | 0 | 0 | 0 | 0 | – |
| 2019/2020 | Sunderland | EFL Trophy | 2 | 1 | 0 | 0 | 0 | – |
| 2019/2020 | Sunderland | EFL Cup | 3 | 1 | 0 | 0 | 0 | 6.6 |
| 2018/2019 | Sunderland | EFL Trophy | 2 | 1 | 0 | 0 | 0 | – |
| 2018/2019 | Wigan | FA Cup | 1 | 0 | 0 | 0 | 0 | 6.8 |
| 2017/2018 | Wigan | FA Cup | 4 | 4 | 0 | 0 | 0 | 7.3 |
| 2017/2018 | Wigan | EFL Cup | 2 | 0 | 0 | 0 | 0 | – |
| 2016/2017 | Wigan | FA Cup | 1 | 0 | 0 | 0 | 0 | 6.5 |
| 2016/2017 | Wigan | EFL Cup | 1 | 1 | 0 | 0 | 0 | – |
| 2015/2016 | Wigan | Johnstone's Paint Trophy | 1 | 2 | 0 | 0 | 0 | – |
| 2015/2016 | Wigan | Capital One Cup | 1 | 1 | 0 | 0 | 0 | – |
| 2014/2015 | MK Dons | Capital One Cup | 3 | 2 | 0 | 0 | 0 | – |
| 2012/2013 | Walsall | Johnstone's Paint Trophy | 1 | 1 | 0 | 0 | 0 | – |
| 2012/2013 | Walsall | Capital One Cup | 1 | 0 | 0 | 1 | 0 | – |
| Total | 52 | 20 | 2 | 2 | 0 | – | ||
| Fecha | Desde | Hacia | Tipo | |
|---|---|---|---|---|
| 07 ene 2023 | MK Dons | Chesterfield | ||
| - | Sunderland | MK Dons | Free agent | |
| - | Rotherham | Sunderland | Return from loan | |
| - | Sunderland | Rotherham | Loan | |
| - | MK Dons | Sunderland | Return from loan | |
| 02 ene 2021 | Sunderland | MK Dons | Loan | |
| - | Wigan | Sunderland | Transfer | |
| - | Brentford | Wigan | Transfer | |
| - | MK Dons | Brentford | Return from loan | |
| - | Brentford | MK Dons | Loan | |
| 07 ene 2013 | Walsall | Brentford | Transfer | |
| 07 ene 2008 | Stratford | Walsall | ||
| 09 ene 2007 | Solihull Moors | Stratford | Free agent | |
| - | Birmingham | Solihull Moors | Free agent |
W. Grigg career history shows progression across clubs and competitions, including club timeline, national team appearances and overall career totals.