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

BOS @ CIN

Home plate: Dan Iassogna

The plate grew a few inches after the first pitch.

D
Umpire Grade
88.6% accurate
0.0
Run Favor
runs, BOS
3
ABS Overturns
of 4 reviewed

What this shows — how Dan Iassogna called the 132 pitches that were taken (no swing), graded against the tracked rulebook strike zone. He got 117 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: Carlos Narváez — the ump called it a ball, the robot ruled strike (OVERTURNED — ump overruled).1Challenge 2: Carlos Narváez — the ump called it a ball, the robot ruled ball (upheld — ump confirmed).2Challenge 3: Tyler Stephenson — the ump called it a strike, the robot ruled ball (OVERTURNED — ump overruled).3Challenge 4: Roman Anthony — the ump called it a strike, the robot ruled ball (OVERTURNED — ump overruled).4
strike called ballball called strikeABS overturnedABS upheld

The calls that moved the game

  1. 1+0.394 · 2-2 strike called ball· challenged
    Eugenio Suárez vs Garrett Crochet
  2. 2+0.282 · 1-2 strike called ball
    Wilyer Abreu vs Andrew Abbott
  3. 3-0.285 · 1-2 ball called strike
    Trevor Story vs Andrew Abbott

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

  1. 1Carlos Narváez — ump said ball, robot ruled strike: overturned.
  2. 2Carlos Narváez — ump said ball, robot ruled ball: upheld.
  3. 3Tyler Stephenson — ump said strike, robot ruled ball: overturned.
  4. 4Roman Anthony — ump said strike, robot ruled ball: overturned.

Our tracked-rulebook zone matched the ABS ruling on 1 of 4 — a zone-definition gap (ABS grades a standardized, height-based zone), not our error.

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