Chicago White Sox starter Michael Kopech had a baffling 2022 season. He posted a solid 3.54 ERA and 1.19 WHIP but posted a head-scratching 21.3% strikeout rate and could only muster five wins in 25 starts. Kopech's typically nasty slider had 2.5 inches below average of horizontal movement, and its whiff rate went from 36% in 2021 to 21.3% this season. The 26-year-old's flamethrower fastball lost 2.4 MPH (97.3 MPH to 94.9 MPH) and 6.1 percentage points in whiff rate from last season. Kopech ...