Fever BaseballFor collectors and stat nerdsFuture Value Radar (FVR) · On the record
Blue Notes · Umpire Grade2026-05-24

TEX @ LAA

Home plate: John Libka

A steady night's work behind the plate.

B+
Umpire Grade
93.3% accurate
0.1
Run Favor
runs, LAA
1
ABS Overturns
of 1 reviewed

What this shows — how John Libka called the 135 pitches that were taken (no swing), graded against the tracked rulebook strike zone. He got 126 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: Danny Jansen — the ump called it a ball, the robot ruled strike (OVERTURNED — ump overruled).1
strike called ballball called strikeABS overturnedABS upheld

The calls that moved the game

  1. 1-0.305 · 3-1 ball called strike
    Adam Frazier vs MacKenzie Gore
  2. 2-0.194 · 2-0 ball called strike
    Justin Foscue vs Reid Detmers
  3. 3+0.133 · 1-1 strike called ball· challenged
    Zach Neto vs MacKenzie Gore

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

1 pitch went to the robots · 1 overturned (ump overruled) · 0 upheld (ump confirmed). This is the ABS system’s own measurement — Hawk-Eye optical ball-tracking, not our model.

  1. 1Danny Jansen — ump said ball, robot ruled strike: overturned.

Our tracked-rulebook zone matched the ABS ruling on 1 of 1 — a zone-definition gap (ABS grades a standardized, height-based zone), not our error.

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