Chicago White Sox
Although they have not thrown an MLB pitch in 2024, David Purcey threw 3,818 pitches that were tracked by the PITCHf/x system between 2008 and 2014, including pitches thrown in the MLB Regular Season and Spring Training. In 2014, they relied primarily on their Fourseam Fastball (93mph) and Slider (85mph), also mixing in a Change (86mph).
In 2014, compared to other LHP:
Their fourseam fastball is basically never swung at and missed compared to other pitchers' fourseamers, has some natural sinking action and has slightly above average velo. Their slider (take this with a grain of salt because they've only thrown 11 of them in 2014) generates an extremely high number of swings & misses compared to other pitchers' sliders, results in more flyballs compared to other pitchers' sliders and has less than expected depth. Their change (take this with a grain of salt because they've only thrown 4 of them in 2014) is an extreme flyball pitch compared to other pitchers' changeups, is much firmer than usual and has some natural sink to it.