Fever BaseballFor collectors and stat nerdsFuture Value Radar (FVR) · On the record
Blue Notes · Umpire Grade2026-08-22

PIT @ LAD

Home plate: Alfonso Márquez

A small strike zone, generously enforced for the offense.

B-
Umpire Grade
91.3% accurate
0.7
Run Favor
runs, PIT
2
ABS Overturns
of 5 reviewed

What this shows — how Alfonso Márquez called the 150 pitches that were taken (no swing), graded against the tracked rulebook strike zone. He got 137 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: Mookie Betts — the ump called it a ball, the robot ruled strike (OVERTURNED — ump overruled).1Challenge 2: Tarik Skubal — the ump called it a ball, the robot ruled ball (upheld — ump confirmed).2Challenge 3: Ben Rortvedt — the ump called it a ball, the robot ruled ball (upheld — ump confirmed).3Challenge 4: Henry Davis — the ump called it a strike, the robot ruled ball (OVERTURNED — ump overruled).4Challenge 5: Henry Davis — the ump called it a ball, the robot ruled ball (upheld — ump confirmed).5
strike called ballball called strikeABS overturnedABS upheld

The calls that moved the game

  1. 1+0.282 · 1-2 strike called ball· challenged
    Jared Triolo vs Tarik Skubal
  2. 2+0.239 · 0-2 strike called ball
    Jake Mangum vs Tanner Scott
  3. 3+0.204 · 2-1 strike called ball
    Teoscar Hernández vs Jared Jones

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. 1Mookie Betts — ump said ball, robot ruled strike: overturned.
  2. 2Tarik Skubal — ump said ball, robot ruled ball: upheld.
  3. 3Ben Rortvedt — ump said ball, robot ruled ball: upheld.
  4. 4Henry Davis — ump said strike, robot ruled ball: overturned.
  5. 5Henry Davis — ump said ball, robot ruled ball: upheld.

Our tracked-rulebook zone matched the ABS ruling on 2 of 5 — a zone-definition gap (ABS grades a standardized, height-based zone), not our error.

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