1
This year he's been annihilated by sliders, while hanging in there vs. fastballs (despite seeing an AVERAGE FB velocity of about 92 mph). And this year, he's done much, much better versus power pitchers than finesse, per B-Ref's definition (1.118 OPS with a BABIP under .150!!!).
Seems like it's not a fatal flaw, just statistical noise. Look at the fangraphs pitch type values again - he's been hopeless against ANY offspeed pitch this year (min. 5%).