Although they have not thrown an MLB pitch in 2024, Ken Waldichuk threw 3,538 pitches that were tracked by the PITCHf/x system between 2022 and 2023, including pitches thrown in the MLB Regular Season and Spring Training. In 2023, they relied primarily on their Fourseam Fastball (93mph) and Slider (81mph), also mixing in a Change (84mph). He also rarely threw a Curve (75mph).
In 2023, compared to other LHP:
Their fourseam fastball has some natural sinking action and has slightly above average velo. Their slider sweeps across the zone, results in somewhat more flyballs compared to other pitchers' sliders and has some two-plane movement. Their change dives down out of the zone, generates more whiffs/swing compared to other pitchers' changeups, is slightly firmer than usual, results in somewhat more groundballs compared to other pitchers' changeups and has slight armside fade. Their curve is basically never swung at and missed compared to other pitchers' curves, has sweeping glove-side movement, has a sharp downward bite, results in somewhat more flyballs compared to other pitchers' curves and has slightly below average velo.