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Player

Spencer Horwitz

PIT1BBats LThrows RActive

Season 2025 pitches faced. 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.

2-pitch windows

1,288

Chase%

26.6%

Whiff%

16.1%

xwOBA

0.323

Sequence Entropy

72

Sequence Lift

7.9%

Sequence Effectiveness

-0.007

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 FastballSinkerChangeupSliderCutterCurveballSweeperKnuckle CurveSplitterSlurveUnknownFour-seam FastballChangeupSinkerSliderCutterCurveballSweeperSplitterKnuckle CurveSlurveUnknown
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 FastballSinkerChangeupSliderCutterCurveballSweeperKnuckle CurveSplitterSlurveUnknownFour-seam FastballChangeupSinkerSliderCutterCurveballSweeperSplitterKnuckle CurveSlurveUnknown
Sequence tree from Four-seam Fastball
Branches are 2-pitch, then 3- and 4-pitch n-grams when the sample clears the display floor. Count filters hide 3/4-grams.
Four-seam FastballFour-seam FastballFour-seam FastballFour-seam FastballSliderChangeupCurveballSplitterSliderFour-seam FastballSliderChangeupChangeupFour-seam FastballCurveballSweeperFour-seam FastballSplitterSlurveFour-seam FastballSlurveCutterKnuckle CurveKnuckle CurveSliderFour-seam FastballFour-seam FastballSliderSliderFour-seam FastballSliderSinkerCurveballChangeupChangeupFour-seam FastballChangeupFour-seam FastballFour-seam FastballChangeupSliderSinkerCurveballFour-seam FastballFour-seam FastballChangeupCurveballCutterSliderCutterFour-seam FastballFour-seam FastballCutterCutterChangeupCurveballFour-seam FastballSinkerFour-seam FastballChangeupSinkerSplitterFour-seam FastballSweeperFour-seam FastballKnuckle CurveKnuckle CurveSlurveFour-seam FastballSlurveFour-seam Fastball
Chase% after Four-seam Fastball
Last-pitch rates on the follow-up. Sample floors hide tiny pairs.
Pooled model after Four-seam Fastball
Observed mix versus a league-pooled next-pitch model given last pitch and count. Smoothing for rare contexts, not a sit or pick.