To re-order stats, just click and drag by the “drag handle”: . Changes are saved automatically.
However, stats will remain in their respective category. For example, if you drag “Saves” above “Goals Scored” but the Defense category is below the Offense category, then “Saves” will still appear below “Goals Scored.”
Note: You are in charge of creating which categories of statistics you want to keep track of, so Offense and Defense are simply common categories that many teams use.