Descriptive only — no edge claimed. These are measured pitch-level distributions, not projections.
MLB pitch types · MLB · as of 2025-09-28
Four-Seam Fastball (FF)
Descriptive card · conservative measured rates.
n pitches
220235
Higher than 99% of 61 in pack
% of all pitches
31.78
Higher than 98% of 61 in pack
velo p10
91.3
velo p50
94.5
velo p90
97.7
Bars show where this card sits within its own pack (61 mlb pitch types), by simple rank of the measured value. Higher is only higher -- no quality judgement is implied.
What stands out
- It is the sport's default: 220,235 four-seamers, 31.78% of everything thrown.
- Leverage barely moves it -- 27.6% ahead, 43.3% even, 29.0% behind -- the flattest count profile of the four pitches profiled here.
- Median velocity 94.5 mph; outcomes split 49.6% strike, 34.0% ball, 16.4% in play.
Reading note
Descriptive only, over a single 2025 Statcast pull. The count-leverage shares are of this pitch's OWN usage (what share of four-seamers fall in each leverage class) -- they are not the share of any given count that is a four-seam. The strike bucket merges called, swinging, and foul strikes (no per-pitch swing/take in this corpus), so it is not a whiff rate. 'Flattest of these four' is scoped to the four pitch types written up in this pack. Not a prediction; no edge claim.