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 Grade2026-04-17

ATL @ PHI

Home plate: John Libka

“Reliable as a Tuesday: no complaints, no headlines.”

B+
Umpire Grade
93.5% accurate
0.1
Run Favor
runs, PHI
1
ABS Overturns
of 3 reviewed

What this shows — how John Libka called the 169 pitches that were taken (no swing), graded against the tracked rulebook strike zone. He got 158 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: Ronald Acuña Jr. — the ump called it a strike, the robot ruled strike (upheld — ump confirmed).1Challenge 2: Drake Baldwin — the ump called it a strike, the robot ruled ball (OVERTURNED — ump overruled).2Challenge 3: Alec Bohm — the ump called it a strike, the robot ruled strike (upheld — ump confirmed).3
strike called ballball called strikeABS overturnedABS upheld

The calls that moved the game

  1. 1-0.39▲4 · 2-2 ball called strike
    Austin Riley vs Taijuan Walker
  2. 2-0.39▼4 · 2-2 ball called strike· challenged ✓
    Alec Bohm vs Martín Pérez
  3. 3-0.28▲1 · 1-2 ball called strike
    Austin Riley vs Taijuan Walker

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

3 pitches went to the robots · 1 overturned (ump overruled) · 2 upheld (ump confirmed). This is Hawkeye ground truth, no model involved.

  1. 1Ronald Acuña Jr. — ump said strike, robot ruled strike: upheld.
  2. 2Drake Baldwin — ump said strike, robot ruled ball: overturned.
  3. 3Alec Bohm — ump said strike, robot ruled strike: upheld.

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