Fever BaseballFor collectors and stat nerdsFuture Value Radar (FVR) · On the record
Blue Notes · Umpire Grade2026-05-10

NYM @ AZ

Home plate: Will Little

Quietly excellent. The best umpiring is the kind you forget was there.

A+
Umpire Grade
97.8% accurate
0.0
Run Favor
runs, NYM
2
ABS Overturns
of 5 reviewed

What this shows — how Will Little called the 137 pitches that were taken (no swing), graded against the tracked rulebook strike zone. He got 134 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: James McCann — the ump called it a ball, the robot ruled strike (OVERTURNED — ump overruled).1Challenge 2: Marcus Semien — the ump called it a strike, the robot ruled ball (OVERTURNED — ump overruled).2Challenge 3: James McCann — the ump called it a ball, the robot ruled ball (upheld — ump confirmed).3Challenge 4: Austin Slater — the ump called it a strike, the robot ruled strike (upheld — ump confirmed).4Challenge 5: Mark Vientos — 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. 1-0.307 · 3-1 ball called strike· challenged
    Marcus Semien vs Eduardo Rodriguez
  2. 2+0.235 · 0-2 strike called ball· challenged
    Marcus Semien vs Eduardo Rodriguez
  3. 3+0.094 · 0-0 strike called ball
    Juan Soto vs Eduardo Rodriguez

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. 1James McCann — ump said ball, robot ruled strike: overturned.
  2. 2Marcus Semien — ump said strike, robot ruled ball: overturned.
  3. 3James McCann — ump said ball, robot ruled ball: upheld.
  4. 4Austin Slater — ump said strike, robot ruled strike: upheld.
  5. 5Mark Vientos — ump said strike, robot ruled strike: upheld.

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

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