Fever BaseballFor collectors and stat nerdsFuture Value Radar (FVR) · On the record
Blue Notes · Umpire Grade2026-04-18

LAD @ COL

Home plate: Dan Iassogna

A pitcher's-nightmare zone — you had to paint it to get it.

B-
Umpire Grade
91.8% accurate
0.2
Run Favor
runs, LAD
4
ABS Overturns
of 5 reviewed

What this shows — how Dan Iassogna called the 134 pitches that were taken (no swing), graded against the tracked rulebook strike zone. He got 123 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: Edouard Julien — the ump called it a strike, the robot ruled ball (OVERTURNED — ump overruled).1Challenge 2: Hunter Goodman — the ump called it a ball, the robot ruled strike (OVERTURNED — ump overruled).2Challenge 3: Teoscar Hernández — the ump called it a strike, the robot ruled ball (OVERTURNED — ump overruled).3Challenge 4: Hunter Goodman — the ump called it a ball, the robot ruled strike (OVERTURNED — ump overruled).4Challenge 5: Hunter Goodman — the ump called it a ball, the robot ruled ball (upheld — ump confirmed).5
strike called ballball called strikeABS overturnedABS upheld

The calls that moved the game

  1. 1+0.288 · 1-2 strike called ball· challenged
    Andy Pages vs Jaden Hill
  2. 2+0.193 · 2-0 strike called ball
    Edouard Julien vs Emmet Sheehan
  3. 3-0.131 · 1-0 ball called strike· challenged
    Edouard Julien vs Emmet Sheehan

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

5 pitches went to the robots · 4 overturned (ump overruled) · 1 upheld (ump confirmed). This is the ABS system’s own measurement — Hawk-Eye optical ball-tracking, not our model.

  1. 1Edouard Julien — ump said strike, robot ruled ball: overturned.
  2. 2Hunter Goodman — ump said ball, robot ruled strike: overturned.
  3. 3Teoscar Hernández — ump said strike, robot ruled ball: overturned.
  4. 4Hunter Goodman — ump said ball, robot ruled strike: overturned.
  5. 5Hunter Goodman — ump said ball, robot ruled ball: upheld.

Our tracked-rulebook zone matched the ABS ruling on 5 of 5 — a zone-definition gap (ABS grades a standardized, height-based zone), not our error.

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