Fever BaseballFor collectors and stat nerdsFuture Value Radar (FVR) · On the record
Blue Notes · Umpire Grade2026-04-25

LAA @ KC

Home plate: Derek Thomas

Expanded the plate a touch past its 17 inches.

C
Umpire Grade
89.8% accurate
0.1
Run Favor
runs, KC
1
ABS Overturns
of 5 reviewed

What this shows — how Derek Thomas called the 187 pitches that were taken (no swing), graded against the tracked rulebook strike zone. He got 168 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: Isaac Collins — the ump called it a strike, the robot ruled ball (OVERTURNED — ump overruled).1Challenge 2: Logan O'Hoppe — the ump called it a ball, the robot ruled ball (upheld — ump confirmed).2Challenge 3: Nick Loftin — the ump called it a strike, the robot ruled strike (upheld — ump confirmed).3Challenge 4: Carter Jensen — the ump called it a ball, the robot ruled ball (upheld — ump confirmed).4Challenge 5: Jordan Romano — 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+0.392 · 2-2 strike called ball
    Oswald Peraza vs Cole Ragans
  2. 2+0.394 · 2-2 strike called ball· challenged
    Vinnie Pasquantino vs Walbert Ureña
  3. 3+0.282 · 1-2 strike called ball
    Oswald Peraza vs Cole Ragans

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

  1. 1Isaac Collins — ump said strike, robot ruled ball: overturned.
  2. 2Logan O'Hoppe — ump said ball, robot ruled ball: upheld.
  3. 3Nick Loftin — ump said strike, robot ruled strike: upheld.
  4. 4Carter Jensen — ump said ball, robot ruled ball: upheld.
  5. 5Jordan Romano — ump said ball, robot ruled ball: 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.

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