Los Angeles Dodgers
Although they have not thrown an MLB pitch in 2024, Justin Masterson threw 19,983 pitches that were tracked by the PITCHf/x system between 2008 and 2015, including pitches thrown in the MLB Regular Season and Spring Training. In 2015, they relied primarily on their Sinker (88mph), Slider (79mph) and Fourseam Fastball (89mph). He also rarely threw a Change (84mph).
In 2015, compared to other RHP:
Their sinker is so slow that it is substantially gravitational, has heavy sinking action, is a real worm killer that generates an extreme number of groundballs compared to other pitchers' sinkers and has slight armside run. Their slider comes in below hitting speed, sweeps across the zone, results in somewhat more flyballs compared to other pitchers' sliders and has some two-plane movement. Their fourseam fastball has heavy sinking action, has below average velo and results in somewhat more groundballs compared to other pitchers' fourseamers. Their change (take this with a grain of salt because they've only thrown 4 of them in 2015) generates an extremely high number of swings & misses compared to other pitchers' changeups, dives down out of the zone and results in more flyballs compared to other pitchers' changeups.