Non-MLB
Although they have not thrown an MLB pitch in 2024, Rob Whalen threw 661 pitches that were tracked by the PITCHf/x system between 2016 and 2018, including pitches thrown in the MLB Regular Season and Spring Training. In 2018, they relied primarily on their Sinker (90mph), also mixing in a Slider (82mph), Curve (78mph) and Fourseam Fastball (91mph).
In 2018, compared to other RHP:
Their sinker generates an extremely high number of swings & misses compared to other pitchers' sinkers, has heavy sinking action, results in many more groundballs compared to other pitchers' sinkers, has less armside run than typical and has slightly below average velo. Their slider generates more whiffs/swing compared to other pitchers' sliders, has short glove-side cut and has some two-plane movement. Their curve is basically never swung at and missed compared to other pitchers' curves, has a sharp downward bite, results in somewhat more flyballs compared to other pitchers' curves and has slight glove-side movement. Their fourseam fastball has heavy sinking action, is basically never swung at and missed compared to other pitchers' fourseamers, is straight as an arrow, is an extreme flyball pitch compared to other pitchers' fourseamers and has slightly below average velo.