Blue Notes · Umpire Grade2026-08-04
“Down the middle. Both dugouts had the same zone.”
Umpire Grade
93.9% accurate
Run Favor
runs, CHC
ABS Overturns
of 2 reviewed
What this shows — how Laz Diaz called the 131 pitches that were taken (no swing), graded against the tracked rulebook strike zone. He got 123 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▼8 · 3-1 ball called strike
Ian Happ vs Edwin Díaz - 2+0.13▼3 · 1-1 strike called ball
Pete Crow-Armstrong vs Tarik Skubal - 3+0.13▲7 · 1-1 strike called ball· challenged ✓
Mookie Betts vs Ryan Rolison
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
2 pitches went to the robots · 2 overturned (ump overruled) · 0 upheld (ump confirmed). This is the ABS system’s own measurement — Hawk-Eye optical ball-tracking, not our model.
- 1Miguel Amaya — ump said ball, robot ruled strike: overturned.
- 2Miguel Amaya — ump said ball, robot ruled strike: overturned.
Our tracked-rulebook zone matched the ABS ruling on 2 of 2 — a zone-definition gap (ABS grades a standardized, height-based zone), not our error.