Fever BaseballFor collectors and stat nerdsFuture Value Radar (FVR) · On the record
Blue Notes · Umpire Grade2026-04-30

WSH @ NYM

Home plate: Brian Walsh

An honest evening's grade: nothing loud, nothing missed by much.

A-
Umpire Grade
94.4% accurate
0.2
Run Favor
runs, NYM
2
ABS Overturns
of 2 reviewed

What this shows — how Brian Walsh called the 143 pitches that were taken (no swing), graded against the tracked rulebook strike zone. He got 135 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: Luis Torrens — the ump called it a ball, the robot ruled strike (OVERTURNED — ump overruled).1Challenge 2: Marcus Semien — the ump called it a strike, the robot ruled ball (OVERTURNED — ump overruled).2
strike called ballball called strikeABS overturnedABS upheld

The calls that moved the game

  1. 1+0.132 · 1-1 strike called ball
    Carson Benge vs Miles Mikolas
  2. 2+0.133 · 1-1 strike called ball
    Ronny Mauricio vs Miles Mikolas
  3. 3+0.139 · 1-1 strike called ball· challenged
    Keibert Ruiz vs Devin Williams

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 · 2 overturned (ump overruled) · 0 upheld (ump confirmed). This is the ABS system’s own measurement — Hawk-Eye optical ball-tracking, not our model.

  1. 1Luis Torrens — ump said ball, robot ruled strike: overturned.
  2. 2Marcus Semien — ump said strike, robot ruled ball: overturned.

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

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