Fever BaseballFor collectors and stat nerdsFuture Value Radar (FVR) · On the record
Blue Notes · Umpire Grade2026-05-13

LAA @ CLE

Home plate: Dan Iassogna

A workmanlike night — nothing to frame, nothing to fix.

A-
Umpire Grade
94.8% accurate
0.3
Run Favor
runs, CLE
2
ABS Overturns
of 5 reviewed

What this shows — how Dan Iassogna called the 153 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: Sebastián Rivero — the ump called it a ball, the robot ruled strike (OVERTURNED — ump overruled).1Challenge 2: Jorge Soler — the ump called it a strike, the robot ruled ball (OVERTURNED — ump overruled).2Challenge 3: Austin Hedges — the ump called it a ball, the robot ruled ball (upheld — ump confirmed).3Challenge 4: Angel Martínez — the ump called it a strike, the robot ruled strike (upheld — ump confirmed).4Challenge 5: Mike Trout — the ump called it a strike, the robot ruled strike (upheld — ump confirmed).5
strike called ballball called strikeABS overturnedABS upheld

The calls that moved the game

  1. 1-0.198 · 2-0 ball called strike
    Mike Trout vs Erik Sabrowski
  2. 2+0.137 · 1-0 strike called ball
    Angel Martínez vs Sam Bachman
  3. 3+0.106 · 0-1 strike called ball
    Travis Bazzana vs Reid Detmers

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

  1. 1Sebastián Rivero — ump said ball, robot ruled strike: overturned.
  2. 2Jorge Soler — ump said strike, robot ruled ball: overturned.
  3. 3Austin Hedges — ump said ball, robot ruled ball: upheld.
  4. 4Angel Martínez — ump said strike, robot ruled strike: upheld.
  5. 5Mike Trout — ump said strike, robot ruled strike: upheld.

Our tracked-rulebook zone matched the ABS ruling on 4 of 5 — a zone-definition gap (ABS grades a standardized, height-based zone), not our error.

Paste the link anywhere — the card previews on its own. Or take it with you.

Post on X