Fever BaseballFor collectors and stat nerdsFuture Value Radar (FVR) · On the record
Blue Notes · Umpire Grade2026-04-10

ATH @ NYM

Home plate: John Libka

Both benches went home with nothing to say — the rarest kind of night.

A
Umpire Grade
96.2% accurate
0.0
Run Favor
runs, NYM
1
ABS Overturns
of 2 reviewed

What this shows — how John Libka called the 130 pitches that were taken (no swing), graded against the tracked rulebook strike zone. He got 125 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: Francisco Alvarez — the ump called it a ball, the robot ruled strike (OVERTURNED — ump overruled).1Challenge 2: Carlos Cortes — 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+0.301 · 3-1 strike called ball
    Nick Kurtz vs Clay Holmes
  2. 2-0.193 · 2-0 ball called strike
    Carlos Cortes vs Clay Holmes
  3. 3-0.134 · 1-0 ball called strike
    Jacob Wilson vs Clay Holmes

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 · 1 overturned (ump overruled) · 1 upheld (ump confirmed). This is the ABS system’s own measurement — Hawk-Eye optical ball-tracking, not our model.

  1. 1Francisco Alvarez — ump said ball, robot ruled strike: overturned.
  2. 2Carlos Cortes — 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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