Fever BaseballFuture Value Radar (FVR) · On the record
RECORD: 0 HIT · 0 MISS · 12 OPEN · FIRST CALL RESOLVES AUG 12
Support the paperGet the Digest
Blue Notes · Umpire Grade2026-04-10

ATH @ NYM

Home plate: John Libka

“The kind of night where the umpire is the least of the story.”

A
Umpire Grade
95.4% accurate
0.1
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 124 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 strike, the robot ruled ball (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+0.30▲1 · 3-1 strike called ball
    Nick Kurtz vs Clay Holmes
  2. 2-0.19▲3 · 2-0 ball called strike
    Carlos Cortes vs Clay Holmes
  3. 3-0.13▲4 · 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 Hawkeye ground truth, no model involved.

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

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.