Blue Notes · Umpire Grade2026-05-30
AZ @ SEA
Home plate: David Rackley
“You could set a watch by that zone.”
Umpire Grade
98.2% accurate
Run Favor
runs, SEA
ABS Overturns
of 3 reviewed
What this shows — how David Rackley called the 113 pitches that were taken (no swing), graded against the tracked rulebook strike zone. He got 111 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
- 1-0.13▲6 · 1-0 ball called strike· challenged
Corbin Carroll vs Bryan Woo - 2+0.09▼4 · 0-0 strike called ball
Mitch Garver vs Ryne Nelson
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 · 2 overturned (ump overruled) · 1 upheld (ump confirmed). This is Hawkeye ground truth, no model involved.
- 1Gabriel Moreno — ump said strike, robot ruled ball: overturned.
- 2Corbin Carroll — ump said strike, robot ruled strike: upheld.
- 3Gabriel Moreno — ump said ball, robot ruled strike: overturned.
Our tracked-rulebook zone matched the ABS ruling on 0 of 3 — a zone-definition gap (ABS grades a standardized, height-based zone), not our error.