Blue Notes · Umpire Grade2026-04-28
WSH @ NYM
Home plate: Chad Whitson
“You had to throw it down Broadway to get the call.”
Umpire Grade
91.5% accurate
Run Favor
runs, WSH
ABS Overturns
of 3 reviewed
What this shows — how Chad Whitson called the 153 pitches that were taken (no swing), graded against the tracked rulebook strike zone. He got 140 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+0.28▲2 · 1-2 strike called ball
Jacob Young vs Clay Holmes - 2+0.28▲3 · 1-2 strike called ball
James Wood vs Clay Holmes - 3+0.28▲9 · 1-2 strike called ball
Brady House vs Craig Kimbrel
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
3 pitches went to the robots · 0 overturned (ump overruled) · 3 upheld (ump confirmed). This is Hawkeye ground truth, no model involved.
- 1Francisco Alvarez — ump said ball, robot ruled ball: upheld.
- 2Mark Vientos — ump said strike, robot ruled strike: upheld.
- 3Brady House — ump said strike, robot ruled strike: upheld.
Our tracked-rulebook zone matched the ABS ruling on 2 of 3 — a zone-definition gap (ABS grades a standardized, height-based zone), not our error.