Fever BaseballFor collectors and stat nerdsFuture Value Radar (FVR) · On the record
Blue Notes · Umpire Grade2026-09-12

SEA @ ATH

Home plate: Cory Blaser

Solid and unspectacular — exactly what the job asks.

B
Umpire Grade
92.8% accurate
0.2
Run Favor
runs, SEA
4
ABS Overturns
of 4 reviewed

What this shows — how Cory Blaser called the 152 pitches that were taken (no swing), graded against the tracked rulebook strike zone. He got 141 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: Jonah Heim — the ump called it a ball, the robot ruled strike (OVERTURNED — ump overruled).1Challenge 2: Lawrence Butler — the ump called it a strike, the robot ruled ball (OVERTURNED — ump overruled).2Challenge 3: Jonah Heim — the ump called it a ball, the robot ruled strike (OVERTURNED — ump overruled).3Challenge 4: Cal Raleigh — the ump called it a ball, the robot ruled strike (OVERTURNED — ump overruled).4
strike called ballball called strikeABS overturnedABS upheld

The calls that moved the game

  1. 1-0.391 · 2-2 ball called strike· challenged
    Lawrence Butler vs Bryan Woo
  2. 2+0.233 · 0-2 strike called ball· challenged
    Cal Raleigh vs Seth Johnson
  3. 3-0.199 · 2-0 ball called strike
    Cal Raleigh vs Carlos Cortes

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 · 4 overturned (ump overruled) · 0 upheld (ump confirmed). This is the ABS system’s own measurement — Hawk-Eye optical ball-tracking, not our model.

  1. 1Jonah Heim — ump said ball, robot ruled strike: overturned.
  2. 2Lawrence Butler — ump said strike, robot ruled ball: overturned.
  3. 3Jonah Heim — ump said ball, robot ruled strike: overturned.
  4. 4Cal Raleigh — ump said ball, robot ruled strike: overturned.

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

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