Fever BaseballFuture Value Radar (FVR) · On the record
RECORD: 0 HIT · 0 MISS · 12 OPEN · FIRST CALL RESOLVES AUG 12
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Blue Notes · Umpire Grade2026-05-20

PIT @ STL

Home plate: John Libka

“Solid and unspectacular — exactly what the job asks.”

A
Umpire Grade
95.4% accurate
0.2
Run Favor
runs, STL
0
ABS Overturns
of 4 reviewed

What this shows — how John Libka called the 175 pitches that were taken (no swing), graded against the tracked rulebook strike zone. He got 167 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: Nick Gonzales — the ump called it a strike, the robot ruled strike (upheld — ump confirmed).1Challenge 2: Endy Rodríguez — the ump called it a strike, the robot ruled strike (upheld — ump confirmed).2Challenge 3: Iván Herrera — the ump called it a ball, the robot ruled ball (upheld — ump confirmed).3Challenge 4: Iván Herrera — the ump called it a ball, the robot ruled ball (upheld — ump confirmed).4
strike called ballball called strikeABS overturnedABS upheld

The calls that moved the game

  1. 1+0.28▲8 · 1-2 strike called ball· challenged
    Spencer Horwitz vs Matt Pushard
  2. 2+0.13▼1 · 1-0 strike called ball
    Nolan Gorman vs Carmen Mlodzinski
  3. 3+0.09▼1 · 0-0 strike called ball
    Jordan Walker vs Carmen Mlodzinski

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

4 pitches went to the robots · 0 overturned (ump overruled) · 4 upheld (ump confirmed). This is Hawkeye ground truth, no model involved.

  1. 1Nick Gonzales — ump said strike, robot ruled strike: upheld.
  2. 2Endy Rodríguez — ump said strike, robot ruled strike: upheld.
  3. 3Iván Herrera — ump said ball, robot ruled ball: upheld.
  4. 4Iván Herrera — ump said ball, robot ruled ball: upheld.

Our tracked-rulebook zone matched the ABS ruling on 3 of 4 — a zone-definition gap (ABS grades a standardized, height-based zone), not our error.