In bygone eras, White Sox fielding by the numbers would have been no cause for alarm. The Sox’ 32 errors are only five more than the MLB average, and their .982 fielding percentage isn’t far off MLB’s .984 average.
Problem is, the Sox haven’t been very good at turning batted balls into outs, which shows up in defensive efficiency percentage, defensive runs saved and other modern metrics.
The Cubs have been better than average with 25 errors and a .985 fielding percentage, but they fall short in DefEff and runs saved.
Defensive efficiency is calculated by this formula: 1 - (hits - reached on error - home runs) / (plate appearances - walks - strikeouts - hit by pitch - home runs).