Houston Astros
Spencer Arrighetti has thrown 3,953 pitches that have been tracked by the PITCHf/x system between 2023 and 2024, including pitches thrown in the MLB Regular Season and Spring Training. In 2024, they have relied primarily on their Fourseam Fastball (94mph), also mixing in a Cutter (88mph), Curve (78mph), Slider (81mph) and Change (86mph). He also rarely throws a Sinker (94mph).
In 2024, compared to other RHP:
Their fourseam fastball has some natural sinking action, has essentially average velo and has slight armside run. Their cutter results in more flyballs compared to other pitchers' cutters, has some natural sink and has strong cutting action. Their curve has sweeping glove-side movement and generates a high number of swings & misses compared to other pitchers' curves. Their slider sweeps across the zone, generates more whiffs/swing compared to other pitchers' sliders, has below average velo and has some two-plane movement. Their change generates more whiffs/swing compared to other pitchers' changeups, is slightly firmer than usual, has slight armside fade and has some natural sink to it. Their sinker (take this with a grain of salt because they've only thrown 7 of them in 2024) is basically never swung at and missed compared to other pitchers' sinkers, results in more flyballs compared to other pitchers' sinkers, has slight armside run and has slightly above average velo.