Blue Notes · Umpire Grade2026-09-01
“No notes. Well, one: nicely done.”
Umpire Grade
97.1% accurate
Run Favor
runs, CLE
ABS Overturns
of 2 reviewed
What this shows — how Laz Diaz called the 139 pitches that were taken (no swing), graded against the tracked rulebook strike zone. He got 135 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▲2 · 1-1 strike called ball
George Springer vs Gavin Williams - 2+0.13▼3 · 1-1 strike called ball
Steven Kwan vs Spencer Arrighetti - 3+0.09▼2 · 0-0 strike called ball
Travis Bazzana vs Ricky Tiedemann
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 · 0 overturned (ump overruled) · 2 upheld (ump confirmed). This is the ABS system’s own measurement — Hawk-Eye optical ball-tracking, not our model.
- 1Alejandro Kirk — ump said ball, robot ruled ball: upheld.
- 2Patrick Bailey — ump said ball, robot ruled ball: upheld.
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.