| Season | Team | Competition | MP | G | A | Rating | ||
|---|---|---|---|---|---|---|---|---|
| 2025/2026 | Bradford City | EFL Trophy | 1 | 0 | 0 | 0 | 0 | 5.9 |
| 2025/2026 | Bradford City | FA Cup | 1 | 0 | 0 | 0 | 0 | – |
| 2025/2026 | Bradford City | EFL Cup | 2 | 0 | 0 | 1 | 0 | 6.8 |
| 2024/2025 | Bradford City | EFL Trophy | 3 | 0 | 0 | 1 | 0 | 6.7 |
| 2024/2025 | Bradford City | FA Cup | 2 | 0 | 0 | 0 | 0 | – |
| 2024/2025 | Bradford City | EFL Cup | 1 | 0 | 0 | 0 | 0 | 7.3 |
| 2023/2024 | Charlton | EFL Trophy | 1 | 0 | 0 | 0 | 0 | 8.3 |
| 2023/2024 | Charlton | FA Cup | 1 | 0 | 0 | 1 | 0 | 6.3 |
| 2022/2023 | Kilmarnock | Scottish Cup | 2 | 0 | 0 | 0 | 0 | – |
| 2022/2023 | Kilmarnock | League Cup | 4 | 0 | 0 | 1 | 0 | – |
| 2021/2022 | Kilmarnock | Challenge Cup | 2 | 0 | 0 | 0 | 0 | – |
| 2021/2022 | Kilmarnock | Scottish Cup | 1 | 0 | 0 | 0 | 0 | – |
| 2021/2022 | Kilmarnock | League Cup | 3 | 0 | 0 | 0 | 0 | – |
| 2020/2021 | AFC Wimbledon | EFL Trophy | 2 | 0 | 0 | 0 | 0 | 6.8 |
| 2019/2020 | Reading | FA Cup | 4 | 0 | 0 | 0 | 0 | – |
| 2019/2020 | Reading | EFL Cup | 1 | 0 | 0 | 0 | 0 | 6.2 |
| 2018/2019 | Reading | EFL Cup | 2 | 0 | 0 | 0 | 0 | – |
| 2017/2018 | Colchester | FA Cup | 1 | 0 | 0 | 0 | 0 | – |
| 2017/2018 | Colchester | EFL Trophy | 1 | 0 | 0 | 0 | 0 | – |
| 2017/2018 | Colchester | EFL Cup | 1 | 0 | 0 | 0 | 0 | 6.7 |
| 2014/2015 | Colchester | FA Cup | 1 | 0 | 0 | 0 | 0 | – |
| 2013/2014 | Colchester | FA Cup | 1 | 0 | 0 | 0 | 0 | – |
| Total | 38 | 0 | 0 | 4 | 0 | – | ||
| Date | From | To | Type | |
|---|---|---|---|---|
| 01 Nov 2024 | Charlton | Bradford City | Free agent | |
| - | Kilmarnock | Charlton | Free agent | |
| 07 Jun 2021 | Reading | Kilmarnock | Free agent | |
| - | AFC Wimbledon | Reading | Return from loan | |
| 01 Nov 2021 | Reading | AFC Wimbledon | Loan | |
| 01 Jun 2021 | Blackpool | Reading | Return from loan | |
| - | Reading | Blackpool | Loan | |
| - | Colchester | Reading | Free agent | |
| - | Chelsea | Colchester | Transfer | |
| - | Colchester | Chelsea | Return from loan | |
| - | Chelsea | Colchester | Loan | |
| 01 Feb 2013 | Bristol Rovers | Chelsea | Return from loan | |
| - | Chelsea | Bristol Rovers | Loan | |
| 05 Jan 2012 | Yeovil | Chelsea | Return from loan | |
| - | Chelsea | Yeovil | Loan | |
| - | Northampton | Chelsea | Return from loan | |
| 07 Nov 2011 | Chelsea | Northampton | Loan | |
| - | Barnet | Chelsea | Return from loan | |
| - | Chelsea | Barnet | Loan | |
| 07 Jan 2007 | Millwall | Chelsea | Free agent |
S. Walker career history shows progression across clubs and competitions, including club timeline, national team appearances and overall career totals.