| Temporada | Equipo | Competición | PJ | G | A | Nota | ||
|---|---|---|---|---|---|---|---|---|
| 2026 | Portland Thorns W | NWSL Women | 2 | 0 | 0 | 0 | 0 | 7.5 |
| 2025 | Portland Thorns W | NWSL Women | 12 | 0 | 0 | 0 | 0 | 7.4 |
| 2024 | Portland Thorns W | NWSL Women | 4 | 0 | 0 | 0 | 0 | 6.5 |
| 2023/2024 | West Ham W | Women’s Super League | 6 | 0 | 0 | 0 | 0 | 7.0 |
| 2022/2023 | West Ham W | Women’s Super League | 20 | 0 | 0 | 1 | 0 | – |
| 2021/2022 | West Ham W | Women’s Super League | 18 | 0 | 0 | 0 | 0 | – |
| 2020/2021 | West Ham W | Women’s Super League | 16 | 0 | 0 | 0 | 0 | – |
| 2019/2020 | Brisbane Roar W | W-League | 12 | 0 | 1 | 0 | 0 | – |
| 2018/2019 | Brisbane Roar W | W-League | 12 | 0 | 0 | 0 | 0 | – |
| 2018 | Arna-Bjornar W | Toppserien Women | 15 | 0 | 0 | 1 | 0 | – |
| 2017/2018 | Brisbane Roar W | W-League | 13 | 0 | 0 | 1 | 0 | – |
| 2016/2017 | Brisbane Roar W | W-League | 11 | 0 | 0 | 0 | 1 | – |
| 2015/2016 | Perth W | W-League | 8 | 0 | 0 | 0 | 0 | – |
| Total | 149 | 0 | 1 | 3 | 1 | – | ||
| Date | From | To | Type | |
|---|---|---|---|---|
| 07 Oct 2024 | West Ham W | Portland Thorns W | Free agent | |
| 07 Jan 2020 | Brisbane Roar W | West Ham W | ||
| - | Chicago W | Brisbane Roar W | ||
| 07 Sept 2019 | Brisbane Roar W | Chicago W | ||
| 11 Jan 2018 | Arna-Bjornar W | Brisbane Roar W | ||
| 03 Nov 2018 | Brisbane Roar W | Arna-Bjornar W | ||
| 07 Jan 2016 | Perth W | Brisbane Roar W | ||
| 07 Jan 2014 | WS Wanderers W | Perth W | ||
| 12 Jan 2013 | Canberra W | WS Wanderers W | ||
| 07 Jan 2012 | Perth W | Canberra W |
M. Arnold career history shows progression across clubs and competitions, including club timeline, national team appearances and overall career totals.