Fever BaseballFor collectors and stat nerdsFuture Value Radar (FVR) · On the record
Blue Notes · Umpire Grade2026-08-03

PIT @ MIL

Home plate: John Libka

A small strike zone, generously enforced for the offense.

B+
Umpire Grade
93.6% accurate
0.3
Run Favor
runs, PIT
2
ABS Overturns
of 5 reviewed

What this shows — how John Libka called the 171 pitches that were taken (no swing), graded against the tracked rulebook strike zone. He got 160 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: Henry Davis — the ump called it a strike, the robot ruled ball (OVERTURNED — ump overruled).1Challenge 2: William Contreras — the ump called it a ball, the robot ruled ball (upheld — ump confirmed).2Challenge 3: Henry Davis — the ump called it a ball, the robot ruled ball (upheld — ump confirmed).3Challenge 4: Cooper Pratt — the ump called it a strike, the robot ruled strike (upheld — ump confirmed).4Challenge 5: Henry Davis — the ump called it a strike, the robot ruled ball (OVERTURNED — ump overruled).5
strike called ballball called strikeABS overturnedABS upheld

The calls that moved the game

  1. 1+0.289 · 1-2 strike called ball
    Brandon Lowe vs Chad Patrick
  2. 2+0.132 · 1-1 strike called ball
    Jake Bauers vs Bubba Chandler
  3. 3+0.136 · 1-0 strike called ball
    Jake Mangum vs Garrett Stallings

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

5 pitches went to the robots · 2 overturned (ump overruled) · 3 upheld (ump confirmed). This is the ABS system’s own measurement — Hawk-Eye optical ball-tracking, not our model.

  1. 1Henry Davis — ump said strike, robot ruled ball: overturned.
  2. 2William Contreras — ump said ball, robot ruled ball: upheld.
  3. 3Henry Davis — ump said ball, robot ruled ball: upheld.
  4. 4Cooper Pratt — ump said strike, robot ruled strike: upheld.
  5. 5Henry Davis — ump said strike, robot ruled ball: overturned.

Our tracked-rulebook zone matched the ABS ruling on 3 of 5 — a zone-definition gap (ABS grades a standardized, height-based zone), not our error.

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