Blue Notes · Umpire Grade2026-04-10
BOS @ STL
Home plate: Bill Miller
“Called a fair game and let the players decide it.”
Umpire Grade
95.4% accurate
Run Favor
runs, STL
ABS Overturns
of 2 reviewed
What this shows — how Bill Miller called the 153 pitches that were taken (no swing), graded against the tracked rulebook strike zone. He got 146 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
- 1-0.21▲6 · 3-0 ball called strike
Willson Contreras vs Dustin May - 2+0.13▼2 · 1-1 strike called ball
Pedro Pagés vs Connelly Early - 3+0.13▼6 · 1-0 strike called ball
Victor Scott II vs Tyler Samaniego
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 Hawkeye ground truth, no model involved.
- 1Willson Contreras — ump said strike, robot ruled strike: upheld.
- 2Iván Herrera — ump said strike, robot ruled strike: 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.