Fever BaseballFor collectors and stat nerdsFuture Value Radar (FVR) · On the record
Blue Notes · Umpire Grade2026-07-29

COL @ SD

Home plate: Dan Iassogna

Corner-to-corner and then some.

A
Umpire Grade
95.5% accurate
0.5
Run Favor
runs, SD
1
ABS Overturns
of 2 reviewed

What this shows — how Dan Iassogna called the 111 pitches that were taken (no swing), graded against the tracked rulebook strike zone. He got 106 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: Luis Rengifo — the ump called it a ball, the robot ruled strike (OVERTURNED — ump overruled).1Challenge 2: Freddy Fermin — the ump called it a ball, the robot ruled ball (upheld — ump confirmed).2
strike called ballball called strikeABS overturnedABS upheld

The calls that moved the game

  1. 1-0.137 · 1-1 ball called strike
    Tyler Freeman vs Wandy Peralta
  2. 2-0.138 · 1-0 ball called strike
    Willi Castro vs Jeremiah Estrada
  3. 3-0.091 · 0-0 ball called strike
    TJ Rumfield vs Kyle Hart

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

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

  1. 1Luis Rengifo — ump said ball, robot ruled strike: overturned.
  2. 2Freddy Fermin — ump said ball, robot ruled ball: upheld.

Our tracked-rulebook zone matched the ABS ruling on 1 of 2 — a zone-definition gap (ABS grades a standardized, height-based zone), not our error.

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