Blue Notes · Umpire Grade2026-03-27
NYY @ SF
Home plate: Chad Fairchild
“An honest evening's grade: nothing loud, nothing missed by much.”
Umpire Grade
96.4% accurate
Run Favor
runs, SF
ABS Overturns
of 4 reviewed
What this shows — how Chad Fairchild called the 139 pitches that were taken (no swing), graded against the tracked rulebook strike zone. He got 134 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
- 1-0.21▲6 · 3-0 ball called strike
Jazz Chisholm Jr. vs José Buttó - 2-0.21▲9 · 3-0 ball called strike
Trent Grisham vs Matt Gage - 3-0.20▲8 · 2-1 ball called strike
Cody Bellinger vs Ryan Walker
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
4 pitches went to the robots · 3 overturned (ump overruled) · 1 upheld (ump confirmed). This is Hawkeye ground truth, no model involved.
- 1Austin Wells — ump said strike, robot ruled ball: overturned.
- 2Aaron Judge — ump said ball, robot ruled strike: overturned.
- 3Patrick Bailey — ump said ball, robot ruled ball: upheld.
- 4Patrick Bailey — ump said strike, robot ruled ball: overturned.
Our tracked-rulebook zone matched the ABS ruling on 2 of 4 — a zone-definition gap (ABS grades a standardized, height-based zone), not our error.