| Season | Team | Competition | MP | G | A | Rating | ||
|---|---|---|---|---|---|---|---|---|
| 2024/2025 | Derby County U21 | Premier League Cup | 1 | 0 | 0 | 0 | 0 | – |
| 2024/2025 | Derby County U21 | National League Cup | 0 | 0 | 0 | 0 | 0 | – |
| 2024/2025 | Derby County | League Cup | 0 | 0 | 0 | 0 | 0 | – |
| 2024/2025 | Derby County | FA Cup | 0 | 0 | 0 | 0 | 0 | – |
| 2023/2024 | Derby County | League Cup | 1 | 0 | 0 | 0 | 0 | 6.2 |
| 2023/2024 | Derby County | EFL Trophy | 1 | 0 | 0 | 0 | 0 | 6.3 |
| 2023/2024 | Derby County | FA Cup | 1 | 0 | 0 | 0 | 0 | – |
| 2022/2023 | Rotherham United | League Cup | 1 | 0 | 0 | 0 | 0 | 6.7 |
| 2022/2023 | Rotherham United | FA Cup | 1 | 1 | 0 | 0 | 0 | – |
| 2021/2022 | Charlton Athletic | FA Cup | 2 | 0 | 1 | 0 | 0 | 7.3 |
| 2021/2022 | Charlton Athletic | EFL Trophy | 1 | 0 | 0 | 0 | 0 | 6.7 |
| 2021/2022 | Charlton Athletic | League Cup | 0 | 0 | 0 | 0 | 0 | – |
| 2020/2021 | Charlton Athletic | League Cup | 1 | 0 | 0 | 0 | 0 | 6.3 |
| 2020/2021 | Charlton Athletic | FA Cup | 1 | 0 | 0 | 0 | 0 | – |
| 2020/2021 | Charlton Athletic | EFL Trophy | 0 | 0 | 0 | 0 | 0 | – |
| 2019/2020 | Hearts | League Cup | 4 | 1 | 0 | 0 | 0 | – |
| 2019/2020 | Hearts | Scottish Cup | 3 | 0 | 0 | 0 | 0 | – |
| 2018/2019 | Sheffield United | FA Cup | 1 | 0 | 0 | 0 | 0 | – |
| 2018/2019 | Queens Park Rangers | League Cup | 2 | 0 | 0 | 0 | 0 | – |
| 2017/2018 | Queens Park Rangers | League Cup | 1 | 0 | 0 | 0 | 0 | – |
| 2017/2018 | Queens Park Rangers | FA Cup | 0 | 0 | 0 | 0 | 0 | – |
| 2016/2017 | Queens Park Rangers | League Cup | 3 | 1 | 0 | 0 | 0 | – |
| 2016/2017 | Queens Park Rangers | FA Cup | 0 | 0 | 0 | 0 | 0 | – |
| 2015/2016 | Peterborough United | FA Cup | 3 | 4 | 0 | 0 | 0 | – |
| 2015/2016 | Peterborough United | League Cup | 2 | 1 | 0 | 0 | 0 | – |
| 2015/2016 | Peterborough United | EFL Trophy | 1 | 0 | 0 | 0 | 0 | – |
| 2014/2015 | Peterborough United | League Cup | 1 | 0 | 0 | 0 | 0 | – |
| 2014/2015 | Peterborough United | EFL Trophy | 1 | 0 | 0 | 0 | 0 | – |
| 2014/2015 | Peterborough United | FA Cup | 2 | 0 | 0 | 0 | 0 | – |
| 2013/2014 | Newport County | League Cup | 2 | 1 | 0 | 0 | 0 | – |
| 2013/2014 | Newport County | EFL Trophy | 3 | 2 | 0 | 0 | 0 | – |
| 2013/2014 | Newport County | FA Cup | 3 | 0 | 0 | 0 | 0 | – |
| 2012/2013 | Newport County | FA Trophy | 0 | 0 | 0 | 0 | 0 | – |
| Total | 43 | 11 | 1 | 0 | 0 | – | ||
| Date | From | To | Type | |
|---|---|---|---|---|
| - | Newport County | Peterborough United | Transfer | |
| - | Peterborough United | Queens Park Rangers | Transfer | |
| - | Queens Park Rangers | Sheffield United | Free Transfer | |
| 07 Jan 2019 | Sheffield United | Hearts | Transfer | |
| - | Hearts | Charlton Athletic | Transfer | |
| 07 Jan 2022 | Charlton Athletic | Rotherham United | Free Transfer | |
| 07 Jul 2023 | Rotherham United | Derby County | Transfer |
C. Washington career history shows progression across clubs and competitions, including club timeline, national team appearances and overall career totals.