Fever BaseballFor collectors and stat nerdsFuture Value Radar (FVR) · On the record
Blue Notes · Umpire Grade2026-03-26

TB @ STL

Home plate: Chris Guccione

The zone kept its promises.

A-
Umpire Grade
94.2% accurate
0.5
Run Favor
runs, STL
2
ABS Overturns
of 3 reviewed

What this shows — how Chris Guccione called the 154 pitches that were taken (no swing), graded against the tracked rulebook strike zone. He got 145 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 Fortes — the ump called it a ball, the robot ruled strike (OVERTURNED — ump overruled).1Challenge 2: Jonathan Aranda — the ump called it a strike, the robot ruled ball (OVERTURNED — ump overruled).2Challenge 3: Pedro Pagés — the ump called it a ball, the robot ruled ball (upheld — ump confirmed).3
strike called ballball called strikeABS overturnedABS upheld

The calls that moved the game

  1. 1+0.391 · 2-2 strike called ball
    JJ Wetherholt vs Drew Rasmussen
  2. 2-0.213 · 3-0 ball called strike
    Alec Burleson vs Drew Rasmussen
  3. 3-0.133 · 1-1 ball called strike
    Ben Williamson vs Matthew Liberatore

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

  1. 1Nick Fortes — ump said ball, robot ruled strike: overturned.
  2. 2Jonathan Aranda — ump said strike, robot ruled ball: overturned.
  3. 3Pedro Pagés — ump said ball, robot ruled ball: 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.

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