Fever BaseballFor collectors and stat nerdsFuture Value Radar (FVR) · On the record
Blue Notes · Umpire Grade2026-05-28

LAA @ DET

Home plate: Ben May

An honest evening's grade: nothing loud, nothing missed by much.

B+
Umpire Grade
93.1% accurate
0.7
Run Favor
runs, DET
4
ABS Overturns
of 5 reviewed

What this shows — how Ben May called the 175 pitches that were taken (no swing), graded against the tracked rulebook strike zone. He got 163 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: Kevin McGonigle — the ump called it a strike, the robot ruled ball (OVERTURNED — ump overruled).1Challenge 2: Dillon Dingler — the ump called it a strike, the robot ruled strike (upheld — ump confirmed).2Challenge 3: Sebastián Rivero — the ump called it a ball, the robot ruled strike (OVERTURNED — ump overruled).3Challenge 4: Sebastián Rivero — the ump called it a ball, the robot ruled strike (OVERTURNED — ump overruled).4Challenge 5: Oswald Peraza — the ump called it a strike, the robot ruled ball (OVERTURNED — ump overruled).5
strike called ballball called strikeABS overturnedABS upheld

The calls that moved the game

  1. 1+0.393 · 2-2 strike called ball
    Kevin McGonigle vs Grayson Rodriguez
  2. 2-0.133 · 1-0 ball called strike· challenged
    Kevin McGonigle vs Grayson Rodriguez
  3. 3-0.139 · 1-0 ball called strike· challenged
    Oswald Peraza vs Ricky Vanasco

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

  1. 1Kevin McGonigle — ump said strike, robot ruled ball: overturned.
  2. 2Dillon Dingler — ump said strike, robot ruled strike: upheld.
  3. 3Sebastián Rivero — ump said ball, robot ruled strike: overturned.
  4. 4Sebastián Rivero — ump said ball, robot ruled strike: overturned.
  5. 5Oswald Peraza — ump said strike, robot ruled ball: overturned.

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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