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RECORD: 0 HIT · 0 MISS · 15 OPEN · FIRST CALL RESOLVES AUG 12
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Blue Notes · Umpire Grade2026-07-29

BAL @ DET

Home plate: Brian Walsh

“The zone kept its promises.”

A-
Umpire Grade
94.9% accurate
0.1
Run Favor
runs, DET
3
ABS Overturns
of 6 reviewed

What this shows — how Brian Walsh called the 178 pitches that were taken (no swing), graded against the tracked rulebook strike zone. He got 169 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: Yohel Pozo — the ump called it a strike, the robot ruled ball (OVERTURNED — ump overruled).1Challenge 2: Javier Báez — the ump called it a strike, the robot ruled strike (upheld — ump confirmed).2Challenge 3: Coby Mayo — the ump called it a ball, the robot ruled strike (OVERTURNED — ump overruled).3Challenge 4: Colton Cowser — the ump called it a strike, the robot ruled strike (upheld — ump confirmed).4Challenge 5: Riley Greene — the ump called it a ball, the robot ruled strike (OVERTURNED — ump overruled).5Challenge 6: Eduardo Valencia — the ump called it a strike, the robot ruled strike (upheld — ump confirmed).6
strike called ballball called strikeABS overturnedABS upheld

The calls that moved the game

  1. 1+0.28▼2 · 1-2 strike called ball
    Riley Greene vs Trevor Rogers
  2. 2+0.10▼3 · 0-1 strike called ball
    Gleyber Torres vs Trevor Rogers
  3. 3+0.09▲1 · 0-0 strike called ball
    Gunnar Henderson vs Tarik Skubal

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

6 pitches went to the robots · 3 overturned (ump overruled) · 3 upheld (ump confirmed). This is the ABS system’s own measurement — Hawk-Eye optical ball-tracking, not our model.

  1. 1Yohel Pozo — ump said strike, robot ruled ball: overturned.
  2. 2Javier Báez — ump said strike, robot ruled strike: upheld.
  3. 3Coby Mayo — ump said ball, robot ruled strike: overturned.
  4. 4Colton Cowser — ump said strike, robot ruled strike: upheld.
  5. 5Riley Greene — ump said ball, robot ruled strike: overturned.
  6. 6Eduardo Valencia — ump said strike, robot ruled strike: upheld.

Our tracked-rulebook zone matched the ABS ruling on 3 of 6 — a zone-definition gap (ABS grades a standardized, height-based zone), not our error.

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