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Blue Notes · Umpire Grade2026-08-16

COL @ SF

Home plate: Brian Walsh

“Nothing that'll trend, and on this beat that's a compliment.”

B+
Umpire Grade
93.5% accurate
0.7
Run Favor
runs, COL
2
ABS Overturns
of 5 reviewed

What this shows — how Brian Walsh called the 186 pitches that were taken (no swing), graded against the tracked rulebook strike zone. He got 174 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: Drew Cavanaugh — the ump called it a ball, the robot ruled ball (upheld — ump confirmed).1Challenge 2: Brett Sullivan — the ump called it a ball, the robot ruled strike (OVERTURNED — ump overruled).2Challenge 3: Jordan Beck — the ump called it a strike, the robot ruled ball (OVERTURNED — ump overruled).3Challenge 4: Cole Carrigg — the ump called it a strike, the robot ruled strike (upheld — ump confirmed).4Challenge 5: Bryce Eldridge — the ump called it a strike, the robot ruled strike (upheld — ump confirmed).5
strike called ballball called strikeABS overturnedABS upheld

The calls that moved the game

  1. 1+0.69▲6 · 3-2 strike called ball
    Adael Amador vs JT Brubaker
  2. 2-0.21▲5 · 3-0 ball called strike
    Jake McCarthy vs Blade Tidwell
  3. 3+0.20▲6 · 2-1 strike called ball
    Troy Johnston vs Sam Hentges

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

  1. 1Drew Cavanaugh — ump said ball, robot ruled ball: upheld.
  2. 2Brett Sullivan — ump said ball, robot ruled strike: overturned.
  3. 3Jordan Beck — ump said strike, robot ruled ball: overturned.
  4. 4Cole Carrigg — ump said strike, robot ruled strike: upheld.
  5. 5Bryce Eldridge — ump said strike, robot ruled strike: upheld.

Our tracked-rulebook zone matched the ABS ruling on 4 of 5 — a zone-definition gap (ABS grades a standardized, height-based zone), not our error.

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