Fever BaseballFor collectors and stat nerdsFuture Value Radar (FVR) · On the record
Blue Notes · Umpire Grade2026-07-18

STL @ AZ

Home plate: Brian Walsh

Nothing off the plate, and not much on the black either.

C+
Umpire Grade
90.6% accurate
0.4
Run Favor
runs, AZ
0
ABS Overturns
of 2 reviewed

What this shows — how Brian Walsh called the 160 pitches that were taken (no swing), graded against the tracked rulebook strike zone. He got 145 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: James McCann — the ump called it a ball, the robot ruled ball (upheld — ump confirmed).1Challenge 2: José Fermín — the ump called it a strike, the robot ruled strike (upheld — ump confirmed).2
strike called ballball called strikeABS overturnedABS upheld

The calls that moved the game

  1. 1+0.694 · 3-2 strike called ball
    Corbin Carroll vs Dustin May
  2. 2+0.288 · 1-2 strike called ball
    Lars Nootbaar vs Kevin Ginkel
  3. 3+0.234 · 0-2 strike called ball
    Lars Nootbaar vs Brandon Pfaadt

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 the ABS system’s own measurement — Hawk-Eye optical ball-tracking, not our model.

  1. 1James McCann — ump said ball, robot ruled ball: upheld.
  2. 2José Fermín — ump said strike, robot ruled strike: upheld.

Our tracked-rulebook zone matched the ABS ruling on 1 of 2 — a zone-definition gap (ABS grades a standardized, height-based zone), not our error.

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