Fever BaseballFor collectors and stat nerdsFuture Value Radar (FVR) · On the record
Blue Notes · Umpire Grade2026-05-25

WSH @ CLE

Home plate: Alfonso Márquez

Solid and unspectacular — exactly what the job asks.

A
Umpire Grade
95.0% accurate
0.8
Run Favor
runs, WSH
1
ABS Overturns
of 2 reviewed

What this shows — how Alfonso Márquez called the 160 pitches that were taken (no swing), graded against the tracked rulebook strike zone. He got 152 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: Drew Millas — the ump called it a ball, the robot ruled ball (upheld — ump confirmed).1Challenge 2: Patrick Bailey — the ump called it a ball, the robot ruled strike (OVERTURNED — ump overruled).2
strike called ballball called strikeABS overturnedABS upheld

The calls that moved the game

  1. 1+0.191 · 2-0 strike called ball
    CJ Abrams vs Tanner Bibee
  2. 2+0.132 · 1-1 strike called ball
    Luis García Jr. vs Tanner Bibee
  3. 3-0.134 · 1-1 ball called strike
    Chase DeLauter vs Zack Littell

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

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

  1. 1Drew Millas — ump said ball, robot ruled ball: upheld.
  2. 2Patrick Bailey — ump said ball, robot ruled strike: overturned.

Our tracked-rulebook zone matched the ABS ruling on 1 of 2 — a zone-definition gap (ABS grades a standardized, height-based zone), not our error.

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