Blue Notes · Umpire Grade2026-04-01
BOS @ HOU
Home plate: Bruce Dreckman
“Expanded the plate a touch past its 17 inches.”
Umpire Grade
90.5% accurate
Run Favor
runs, HOU
ABS Overturns
of 3 reviewed
What this shows — how Bruce Dreckman called the 147 pitches that were taken (no swing), graded against the tracked rulebook strike zone. He got 133 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
- 1-0.39▲8 · 2-2 ball called strike· challenged ✓
Caleb Durbin vs Kai-Wei Teng - 2-0.21▲5 · 3-0 ball called strike
Wilyer Abreu vs Mike Burrows - 3+0.19▲5 · 2-0 strike called ball
Wilyer Abreu vs Mike Burrows
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 · 3 overturned (ump overruled) · 0 upheld (ump confirmed). This is Hawkeye ground truth, no model involved.
- 1Wilyer Abreu — ump said ball, robot ruled strike: overturned.
- 2Jose Altuve — ump said ball, robot ruled strike: overturned.
- 3Christian Vázquez — ump said strike, robot ruled ball: overturned.
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.