Blue Notes · Umpire Grade2026-05-02
ATL @ COL
Home plate: Chad Whitson
“Called a fair game and let the players decide it.”
Umpire Grade
95.0% accurate
Run Favor
runs, COL
ABS Overturns
of 4 reviewed
What this shows — how Chad Whitson called the 141 pitches that were taken (no swing), graded against the tracked rulebook strike zone. He got 134 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+0.23▼2 · 0-2 strike called ball
Brett Sullivan vs Chris Sale - 2+0.21▼5 · 3-0 strike called ball
Ezequiel Tovar vs Chris Sale - 3-0.13▲2 · 1-1 ball called strike
Drake Baldwin vs Chase Dollander
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
4 pitches went to the robots · 3 overturned (ump overruled) · 1 upheld (ump confirmed). This is Hawkeye ground truth, no model involved.
- 1Hunter Goodman — ump said strike, robot ruled ball: overturned.
- 2Hunter Goodman — ump said strike, robot ruled ball: overturned.
- 3Hunter Goodman — ump said ball, robot ruled ball: upheld.
- 4Drake Baldwin — ump said strike, robot ruled ball: overturned.
Our tracked-rulebook zone matched the ABS ruling on 1 of 4 — a zone-definition gap (ABS grades a standardized, height-based zone), not our error.