The European soccer season gets underway this weekend, with three of Europe's big five leagues -- the English Premier League, Spanish LaLiga and German Bundesliga -- all beginning their 2021-22 campaigns. (The French Ligue 1 began last weekend, and Italy's own Serie A kicks off on Aug. 21.)
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Before last season, I put together a big preview that involved different statistical factors: efficiency, ball control, field factors and regression-to-the-mean factors.