| Temporada | Equipo | Competición | PJ | G | A | Nota | ||
|---|---|---|---|---|---|---|---|---|
| 2025/2026 | Forfar Athletic | League Two | 12 | 2 | 0 | 1 | 0 | – |
| 2024/2025 | Stenhousemuir | Championship | 2 | 0 | 0 | 0 | 0 | – |
| 2024/2025 | Stenhousemuir | League One | 28 | 9 | 2 | 4 | 0 | – |
| 2023/2024 | Partick Thistle | Premiership | 4 | 3 | 0 | 0 | 0 | – |
| 2023/2024 | Partick Thistle | Championship | 24 | 2 | 0 | 0 | 0 | – |
| 2022/2023 | Kilmarnock | Premiership | 16 | 0 | 0 | 0 | 0 | 6.6 |
| 2021/2022 | Kilmarnock | Championship | 31 | 3 | 5 | 5 | 0 | – |
| 2020/2021 | Falkirk | League One | 21 | 3 | 2 | 1 | 0 | – |
| 2019/2020 | Hamilton | Premiership | 13 | 0 | 1 | 1 | 0 | 6.5 |
| 2018/2019 | St Johnstone | Premiership | 21 | 4 | 1 | 2 | 0 | – |
| 2017/2018 | St Johnstone | Premiership | 24 | 2 | 3 | 2 | 0 | – |
| 2016/2017 | St Johnstone | Premiership | 35 | 2 | 3 | 2 | 0 | – |
| 2015/2016 | Falkirk | Premiership | 4 | 1 | 0 | 0 | 0 | – |
| 2015/2016 | Falkirk | Championship | 36 | 10 | 0 | 3 | 0 | – |
| 2014/2015 | Falkirk | Championship | 36 | 3 | 0 | 2 | 0 | – |
| 2013/2014 | Falkirk | Premiership | 4 | 2 | 0 | 1 | 0 | – |
| 2013/2014 | Falkirk | Championship | 29 | 3 | 0 | 1 | 0 | – |
| 2012/2013 | Falkirk | Division 1 | 8 | 2 | 0 | 3 | 0 | – |
| 2011/2012 | Falkirk | Division 1 | 5 | 5 | 0 | 0 | 0 | – |
| 2010/2011 | Falkirk | Division 1 | 1 | 1 | 0 | 0 | 0 | – |
| Total | 354 | 57 | 17 | 28 | 0 | – | ||
| Fecha | Desde | Hacia | Tipo | |
|---|---|---|---|---|
| 01 ene 2026 | Stenhousemuir | Forfar Athletic | Free agent | |
| 08 ago 2024 | Partick Thistle | Stenhousemuir | Free agent | |
| - | Kilmarnock | Partick Thistle | Free agent | |
| 07 ene 2021 | Falkirk | Kilmarnock | Free agent | |
| - | Hamilton | Falkirk | Free agent | |
| 07 ene 2019 | St Johnstone | Hamilton | Free agent | |
| 07 ene 2016 | Falkirk | St Johnstone | Free agent |
B. Alston career history shows progression across clubs and competitions, including club timeline, national team appearances and overall career totals.