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Player

Kyle Leahy

STLPBats SThrows RActive

Season 2025 pitches thrown. Sequences are 2-, 3-, and 4-pitch windows. Count filters apply to 2-pitch type rows only. Location sequences use a 4-region plate map. Date windows stay on Arsenal and Hitting. Tunnel Score on Arsenal.

2-pitch windows

988

CSW%

22.8%

Whiff%

22.1%

Count+

46.8%

Sequence Entropy

84

Sequence Lift

5.7%

Sequence Effectiveness

+0.7%

Location sequence
Type plus a 4-region plate map (up-in, up-away, down-in, down-away). Pairs under 20 sequences are hidden. Count filters do not apply here.
Transition flow
Two-pitch sequences. Link width is how often the next type follows.
Four-seam FastballSliderCurveballSweeperChangeupSinkerUnknownFour-seam FastballCurveballSweeperSliderChangeupSinkerUnknown
Transition lift
P(next | first) minus the unconditional next-pitch mix. Positive means that follow-up is used more than usual after the first type.
Four-seam FastballSliderCurveballSweeperChangeupSinkerUnknownFour-seam FastballCurveballSweeperSliderChangeupSinkerUnknown
Sequence tree from Curveball
Branches are 2-pitch, then 3- and 4-pitch n-grams when the sample clears the display floor. Count filters hide 3/4-grams.
CurveballFour-seam FastballCurveballCurveballSweeperFour-seam FastballChangeupSinkerSweeperCurveballFour-seam FastballCurveballChangeupSweeperChangeupCurveballFour-seam FastballSliderSweeperFour-seam FastballCurveballSweeperSliderFour-seam FastballSinker
Whiff% after Curveball
Last-pitch rates on the follow-up. Sample floors hide tiny pairs.
Pooled model after Curveball
Observed mix versus a league-pooled next-pitch model given last pitch and count. Smoothing for rare contexts, not a sit or pick.