Fever BaseballFor collectors and stat nerdsFuture Value Radar (FVR) · On the record
Blue Notes · Umpire Grade2026-05-03

BAL @ NYY

Home plate: Alfonso Márquez

The grade leaned — the ledger says which way.

B-
Umpire Grade
91.1% accurate
1.4
Run Favor
runs, NYY
3
ABS Overturns
of 5 reviewed

What this shows — how Alfonso Márquez called the 157 pitches that were taken (no swing), graded against the tracked rulebook strike zone. He got 143 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: Austin Wells — the ump called it a ball, the robot ruled ball (upheld — ump confirmed).1Challenge 2: Adley Rutschman — the ump called it a ball, the robot ruled strike (OVERTURNED — ump overruled).2Challenge 3: Samuel Basallo — the ump called it a strike, the robot ruled ball (OVERTURNED — ump overruled).3Challenge 4: Adley Rutschman — the ump called it a ball, the robot ruled ball (upheld — ump confirmed).4Challenge 5: Austin Wells — the ump called it a ball, the robot ruled strike (OVERTURNED — ump overruled).5
strike called ballball called strikeABS overturnedABS upheld

The calls that moved the game

  1. 1+0.695 · 3-2 strike called ball
    Aaron Judge vs Trey Gibson
  2. 2+0.394 · 2-2 strike called ball· challenged
    Austin Wells vs Trey Gibson
  3. 3+0.395 · 2-2 strike called ball
    Aaron Judge vs Trey Gibson

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

  1. 1Austin Wells — ump said ball, robot ruled ball: upheld.
  2. 2Adley Rutschman — ump said ball, robot ruled strike: overturned.
  3. 3Samuel Basallo — ump said strike, robot ruled ball: overturned.
  4. 4Adley Rutschman — ump said ball, robot ruled ball: upheld.
  5. 5Austin Wells — ump said ball, robot ruled strike: overturned.

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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