Blue Notes · Umpire Grade2026-04-17
CWS @ ATH
Home plate: Chad Fairchild
“A steady night's work behind the plate.”
Umpire Grade
93.3% accurate
Run Favor
runs, ATH
ABS Overturns
of 6 reviewed
What this shows — how Chad Fairchild called the 179 pitches that were taken (no swing), graded against the tracked rulebook strike zone. He got 167 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+0.20▲1 · 2-1 strike called ball
Colson Montgomery vs Aaron Civale - 2-0.20▲2 · 2-1 ball called strike
Chase Meidroth vs Aaron Civale - 3-0.19▼7 · 2-0 ball called strike
Nick Kurtz vs Davis Martin
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
6 pitches went to the robots · 3 overturned (ump overruled) · 3 upheld (ump confirmed). This is Hawkeye ground truth, no model involved.
- 1Shea Langeliers — ump said strike, robot ruled ball: overturned.
- 2Miguel Vargas — ump said ball, robot ruled strike: overturned.
- 3Edgar Quero — ump said ball, robot ruled ball: upheld.
- 4Shea Langeliers — ump said strike, robot ruled ball: overturned.
- 5Munetaka Murakami — ump said strike, robot ruled strike: upheld.
- 6Elvis Alvarado — ump said ball, robot ruled ball: upheld.
Our tracked-rulebook zone matched the ABS ruling on 2 of 6 — a zone-definition gap (ABS grades a standardized, height-based zone), not our error.