Blue Notes · Umpire Grade2026-05-31
CHC @ STL
Home plate: Quinn Wolcott
“A tilt to the evening — the numbers say which way.”
Umpire Grade
95.5% accurate
Run Favor
runs, CHC
ABS Overturns
of 4 reviewed
What this shows — how Quinn Wolcott called the 156 pitches that were taken (no swing), graded against the tracked rulebook strike zone. He got 149 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
- 1-0.69▼3 · 3-2 ball called strike· challenged
José Fermín vs Ethan Roberts - 2-0.20▼1 · 2-1 ball called strike
Masyn Winn vs Jordan Wicks - 3-0.19▼5 · 2-0 ball called strike
Alec Burleson vs Trent Thornton
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 · 0 overturned (ump overruled) · 4 upheld (ump confirmed). This is Hawkeye ground truth, no model involved.
- 1Michael Busch — ump said strike, robot ruled strike: upheld.
- 2José Fermín — ump said strike, robot ruled strike: upheld.
- 3Kevin Alcántara — ump said strike, robot ruled strike: upheld.
- 4Nolan Gorman — ump said strike, robot ruled strike: upheld.
Our tracked-rulebook zone matched the ABS ruling on 3 of 4 — a zone-definition gap (ABS grades a standardized, height-based zone), not our error.