Blue Notes · Umpire Grade2026-04-10
“A small strike zone, generously enforced for the offense.”
Umpire Grade
90.7% accurate
Run Favor
runs, BAL
ABS Overturns
of 1 reviewed
What this shows — how Laz Diaz called the 162 pitches that were taken (no swing), graded against the tracked rulebook strike zone. He got 147 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+0.39▼4 · 2-2 strike called ball
Dylan Beavers vs Landen Roupp - 2+0.30▲3 · 3-1 strike called ball
Luis Arraez vs Shane Baz - 3-0.20▲6 · 2-1 ball called strike
Willy Adames vs Yennier Cano
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
1 pitch went to the robots · 1 overturned (ump overruled) · 0 upheld (ump confirmed). This is the ABS system’s own measurement — Hawk-Eye optical ball-tracking, not our model.
- 1Luis Arraez — ump said strike, robot ruled ball: overturned.
Our tracked-rulebook zone matched the ABS ruling on 1 of 1 — a zone-definition gap (ABS grades a standardized, height-based zone), not our error.