Fever BaseballFor collectors and stat nerdsFuture Value Radar (FVR) · On the record
Blue Notes · Umpire Grade2026-08-02

Reliable as a Tuesday: no complaints, no headlines.

A
Umpire Grade
96.9% accurate
0.4
Run Favor
runs, LAA
0
ABS Overturns
of 4 reviewed

What this shows — how Steven Jaschinski called the 128 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: Denzer Guzman — the ump called it a strike, the robot ruled strike (upheld — ump confirmed).1Challenge 2: Denzer Guzman — the ump called it a strike, the robot ruled strike (upheld — ump confirmed).2Challenge 3: William Contreras — the ump called it a ball, the robot ruled ball (upheld — ump confirmed).3Challenge 4: Jake Bauers — the ump called it a strike, the robot ruled strike (upheld — ump confirmed).4
strike called ballball called strikeABS overturnedABS upheld

The calls that moved the game

  1. 1-0.289 · 1-2 ball called strike
    Luis Lara vs Ryan Zeferjahn
  2. 2+0.093 · 0-0 strike called ball
    David Hamilton vs Walbert Ureña
  3. 3-0.095 · 0-0 ball called strike
    Luis Lara vs Walbert Ureña

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 the ABS system’s own measurement — Hawk-Eye optical ball-tracking, not our model.

  1. 1Denzer Guzman — ump said strike, robot ruled strike: upheld.
  2. 2Denzer Guzman — ump said strike, robot ruled strike: upheld.
  3. 3William Contreras — ump said ball, robot ruled ball: upheld.
  4. 4Jake Bauers — ump said strike, robot ruled strike: 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.

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