Blue Notes · Umpire Grade2026-04-13
WSH @ PIT
Home plate: Sean Barber
“Off the corner was close enough tonight.”
Umpire Grade
90.8% accurate
Run Favor
runs, PIT
ABS Overturns
of 1 reviewed
What this shows — how Sean Barber called the 173 pitches that were taken (no swing), graded against the tracked rulebook strike zone. He got 157 right. Below, only his misses are plotted, alongside every pitch the ABS (Automated Ball-Strike System) reviewed on a challenge.
The zone, as he called it
strike called ballball called strikeABS overturnedABS upheld
The calls that moved the game
- 1+0.30▼2 · 3-1 strike called ball
Henry Davis vs Cade Cavalli - 2-0.30▼5 · 3-1 ball called strike
Spencer Horwitz vs Jackson Rutledge - 3-0.28▲6 · 1-2 ball called strike
James Wood vs Paul Skenes
Run impact from the count run-value table: a missed strike three is worth far more than one on 3-0.
ABS — the Automated Ball-Strike System
1 pitch went to the robots · 0 overturned (ump overruled) · 1 upheld (ump confirmed). This is Hawkeye ground truth, no model involved.
- 1Henry Davis — ump said ball, robot ruled ball: upheld.
Our tracked-rulebook zone matched the ABS ruling on 1 of 1 — a zone-definition gap (ABS grades a standardized, height-based zone), not our error.