Non-MLB
Sayer Diederich has thrown 517 pitches that have been tracked by the PITCHf/x system between 2024 and 2026, including pitches thrown in The World Baseball Classic, Spring Training and Fall/Winter Ball. In 2026, they have relied primarily on their Sinker (90mph) and Slider (82mph), also mixing in a Change (88mph) and Cutter (85mph).
In 2026, compared to other LHP:
Their sinker is basically never swung at and missed compared to other pitchers' sinkers, has surprisingly little armside run, results in more flyballs compared to other pitchers' sinkers and has some natural sinking action. Their slider (take this with a grain of salt because they've only thrown 11 of them in 2026) sweeps across the zone, has exceptional depth, generates fewer whiffs/swing compared to other pitchers' sliders and results in more flyballs compared to other pitchers' sliders. Their change (take this with a grain of salt because they've only thrown 3 of them in 2026) is thrown extremely hard, is basically never swung at and missed compared to other pitchers' changeups, dives down out of the zone and is an extreme flyball pitch compared to other pitchers' changeups. Their cutter (take this with a grain of salt because they've only thrown 3 of them in 2026) has heavy sink, is basically never swung at and missed compared to other pitchers' cutters, has sweeping cut action and is an extreme flyball pitch compared to other pitchers' cutters.