Arizona Diamondbacks
Blake Walston has thrown 4,112 pitches that have been tracked by the PITCHf/x system between 2023 and 2024, including pitches thrown in the MLB Regular Season and Fall/Winter Ball. In 2024, they have relied primarily on their Fourseam Fastball (92mph), also mixing in a Slider (82mph), Cutter (88mph), Change (86mph) and Curve (77mph). He also rarely throws a Sinker (90mph).
In 2024, compared to other LHP:
Their fourseam fastball generates an extremely high number of swings & misses compared to other pitchers' fourseamers, has heavy sinking action, has essentially average velo and has slightly less natural movement than typical. Their slider has short glove-side cut, results in somewhat more flyballs compared to other pitchers' sliders and has some two-plane movement. Their cutter is basically never swung at and missed compared to other pitchers' cutters, has slightly above average velo, has some natural sink and has strong cutting action. Their change is a real worm killer that generates an extreme number of groundballs compared to other pitchers' changeups, has surprising cut action, dives down out of the zone and is much firmer than usual. Their curve generates more whiffs/swing compared to other pitchers' curves, has a sharp downward bite and results in somewhat more flyballs compared to other pitchers' curves. Their sinker results in more flyballs compared to other pitchers' sinkers, has less armside run than typical and has some natural sinking action.