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RECORD: 0 HIT · 0 MISS · 12 OPEN · FIRST CALL RESOLVES AUG 12
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Blue Notes · Umpire Grade2026-04-11

BOS @ STL

Home plate: Brian Walsh

“ABS had a long evening on this one.”

A-
Umpire Grade
94.9% accurate
0.1
Run Favor
runs, BOS
5
ABS Overturns
of 5 reviewed

What this shows — how Brian Walsh called the 156 pitches that were taken (no swing), graded against the tracked rulebook strike zone. He got 148 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

Challenge 1: Iván Herrera — the ump called it a ball, the robot ruled strike (OVERTURNED — ump overruled).1Challenge 2: Ramón Urías — the ump called it a ball, the robot ruled strike (OVERTURNED — ump overruled).2Challenge 3: Pedro Pagés — the ump called it a strike, the robot ruled ball (OVERTURNED — ump overruled).3Challenge 4: Jordan Walker — the ump called it a ball, the robot ruled strike (OVERTURNED — ump overruled).4Challenge 5: Yohel Pozo — the ump called it a strike, the robot ruled ball (OVERTURNED — ump overruled).5
strike called ballball called strikeABS overturnedABS upheld

The calls that moved the game

  1. 1+0.28▲1 · 1-2 strike called ball
    Jarren Duran vs Kyle Leahy
  2. 2+0.28▼1 · 1-2 strike called ball· challenged ✓
    Ramón Urías vs Ranger Suarez
  3. 3+0.23▼6 · 0-2 strike called ball
    Nolan Gorman vs Ranger Suarez

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

5 pitches went to the robots · 5 overturned (ump overruled) · 0 upheld (ump confirmed). This is Hawkeye ground truth, no model involved.

  1. 1Iván Herrera — ump said ball, robot ruled strike: overturned.
  2. 2Ramón Urías — ump said ball, robot ruled strike: overturned.
  3. 3Pedro Pagés — ump said strike, robot ruled ball: overturned.
  4. 4Jordan Walker — ump said ball, robot ruled strike: overturned.
  5. 5Yohel Pozo — ump said strike, robot ruled ball: overturned.

Our tracked-rulebook zone matched the ABS ruling on 1 of 5 — a zone-definition gap (ABS grades a standardized, height-based zone), not our error.