Fever BaseballFor collectors and stat nerdsFuture Value Radar (FVR) · On the record
Blue Notes · Umpire Grade2026-04-14

KC @ DET

Home plate: Cory Blaser

Borderline went to the battery all night.

B
Umpire Grade
92.5% accurate
0.4
Run Favor
runs, KC
2
ABS Overturns
of 3 reviewed

What this shows — how Cory Blaser called the 133 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: Dillon Dingler — the ump called it a ball, the robot ruled ball (upheld — ump confirmed).1Challenge 2: Wenceel Pérez — the ump called it a strike, the robot ruled ball (OVERTURNED — ump overruled).2Challenge 3: Salvador Perez — the ump called it a ball, the robot ruled strike (OVERTURNED — ump overruled).3
strike called ballball called strikeABS overturnedABS upheld

The calls that moved the game

  1. 1-0.694 · 3-2 ball called strike· challenged
    Wenceel Pérez vs Cole Ragans
  2. 2+0.305 · 3-1 strike called ball· challenged
    Spencer Torkelson vs Cole Ragans
  3. 3+0.203 · 2-1 strike called ball
    Lane Thomas vs Framber Valdez

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

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

  1. 1Dillon Dingler — ump said ball, robot ruled ball: upheld.
  2. 2Wenceel Pérez — ump said strike, robot ruled ball: overturned.
  3. 3Salvador Perez — ump said ball, robot ruled strike: overturned.

Our tracked-rulebook zone matched the ABS ruling on 3 of 3 — 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