Fever BaseballFor collectors and stat nerdsFuture Value Radar (FVR) · On the record
Blue Notes · Umpire Grade2026-07-26

KC @ DET

Home plate: Brian O'Nora

Called a fair game and let the players decide it.

A
Umpire Grade
96.1% accurate
0.4
Run Favor
runs, DET
2
ABS Overturns
of 4 reviewed

What this shows — how Brian O'Nora called the 180 pitches that were taken (no swing), graded against the tracked rulebook strike zone. He got 173 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: Colt Keith — the ump called it a ball, the robot ruled strike (OVERTURNED — ump overruled).1Challenge 2: Carter Jensen — the ump called it a ball, the robot ruled strike (OVERTURNED — ump overruled).2Challenge 3: Nick Loftin — the ump called it a strike, the robot ruled strike (upheld — ump confirmed).3Challenge 4: Kevin McGonigle — the ump called it a strike, the robot ruled strike (upheld — ump confirmed).4
strike called ballball called strikeABS overturnedABS upheld

The calls that moved the game

  1. 1+0.231 · 0-2 strike called ball
    Gleyber Torres vs Luinder Avila
  2. 2+0.135 · 1-1 strike called ball· challenged
    Colt Keith vs Luinder Avila
  3. 3-0.133 · 1-0 ball called strike
    Gleyber Torres vs Luinder Avila

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

  1. 1Colt Keith — ump said ball, robot ruled strike: overturned.
  2. 2Carter Jensen — ump said ball, robot ruled strike: overturned.
  3. 3Nick Loftin — ump said strike, robot ruled strike: upheld.
  4. 4Kevin McGonigle — ump said strike, robot ruled strike: upheld.

Our tracked-rulebook zone matched the ABS ruling on 3 of 4 — a zone-definition gap (ABS grades a standardized, height-based zone), not our error.

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