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Umpire Intelligence

Today's home plate umpires scored for K-bias and run suppression. The strike zone matters before first pitch.

NYY logoNYY@BOS logoBOS

7:10 PM ET

Angel Hernandez

HP UMPIRE

K-Bias+1.4σSTRIKE ZONE TIGHT
Runs/Game vs Avg-0.3 RPGUNDER-FRIENDLY

Pitcher-friendly zone -> consider K overs and under-friendly totals

LAD logoLAD@SF logoSF

9:45 PM ET

CB Bucknor

HP UMPIRE

K-Bias-1.1σSTRIKE ZONE WIDE
Runs/Game vs Avg+0.5 RPGOVER-FRIENDLY

Hitter-friendly zone -> consider overs and K unders

HOU logoHOU@TEX logoTEX

8:05 PM ET

Joe West

HP UMPIRE

K-Bias+0.2σNEUTRAL
Runs/Game vs Avg0.0 RPGNEUTRAL

Neutral zone - minimal edge from umpire angle today

What is K-Bias?

Home plate umpires vary in called strike rates up to 15% above or below league average. SharpSignal measures that tendency as a zscore across each umpire's season history, then applies it to pitcher strikeout and total context.