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Player

Spencer Bivens

SFPBats RThrows 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

954

CSW%

21.0%

Whiff%

16.1%

Count+

47.5%

Sequence Entropy

80

Sequence Lift

3.4%

Sequence Effectiveness

-4.5%

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.
SinkerCutterChangeupSweeperFour-seam FastballSlurveUnknownSinkerCutterChangeupSweeperFour-seam FastballSlurveUnknown
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.
SinkerCutterChangeupSweeperFour-seam FastballSlurveUnknownSinkerCutterChangeupSweeperFour-seam FastballSlurveUnknown
Sequence tree from Sinker
Branches are 2-pitch, then 3- and 4-pitch n-grams when the sample clears the display floor. Count filters hide 3/4-grams.
SinkerSinkerSinkerSinkerCutterChangeupFour-seam FastballCutterSinkerCutterChangeupCutterSweeperFour-seam FastballSinkerSlurveFour-seam FastballCutterSinkerSinkerCutterFour-seam FastballCutterSinkerChangeupSinkerSweeperSinkerSlurveFour-seam FastballChangeupChangeupSinkerSinkerCutterCutterSweeperSweeperFour-seam FastballSinkerSinkerSweeperCutterFour-seam FastballChangeupCutterSinkerSweeperSlurveSinkerSinkerCutterSlurve
Whiff% after Sinker
Last-pitch rates on the follow-up. Sample floors hide tiny pairs.
Pooled model after Sinker
Observed mix versus a league-pooled next-pitch model given last pitch and count. Smoothing for rare contexts, not a sit or pick.