Chicago White Sox
Although they have not thrown an MLB pitch in 2024, Matt Foster threw 2,069 pitches that were tracked by the PITCHf/x system between 2019 and 2023, including pitches thrown in the MLB Regular Season and Spring Training. In 2023, they relied primarily on their Fourseam Fastball (92mph), also mixing in a Slider (84mph) and Curve (78mph).
In 2023, compared to other RHP:
Their fourseam fastball (take this with a grain of salt because they've only thrown 7 of them in 2023) generates an extremely high number of swings & misses compared to other pitchers' fourseamers, is an extreme flyball pitch compared to other pitchers' fourseamers, has essentially average velo and has some added backspin. Their slider (take this with a grain of salt because they've only thrown 2 of them in 2023) generates an extremely high number of swings & misses compared to other pitchers' sliders, is an extreme flyball pitch compared to other pitchers' sliders and has much less depth than expected. Their curve (take this with a grain of salt because they've only thrown 1 of them in 2023) is basically never swung at and missed compared to other pitchers' curves, has primarily 12-6 movement, results in more flyballs compared to other pitchers' curves and has a sharp downward bite.