Blue Notes · Umpire Grade2026-04-05
ATL @ AZ
Home plate: Lance Barrett
“Off the corner was close enough tonight.”
Umpire Grade
90.8% accurate
Run Favor
runs, AZ
ABS Overturns
of 3 reviewed
What this shows — how Lance Barrett called the 153 pitches that were taken (no swing), graded against the tracked rulebook strike zone. He got 139 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
- 1-0.19▲6 · 2-0 ball called strike
Mauricio Dubón vs Taylor Clarke - 2-0.13▼8 · 1-1 ball called strike
Nolan Arenado vs Robert Suarez - 3+0.13▲4 · 1-0 strike called ball
Matt Olson vs Brandon Pfaadt
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 · 1 overturned (ump overruled) · 2 upheld (ump confirmed). This is Hawkeye ground truth, no model involved.
- 1James McCann — ump said strike, robot ruled ball: overturned.
- 2Mauricio Dubón — ump said strike, robot ruled strike: upheld.
- 3James McCann — ump said ball, robot ruled ball: upheld.
Our tracked-rulebook zone matched the ABS ruling on 1 of 3 — a zone-definition gap (ABS grades a standardized, height-based zone), not our error.