Fever BaseballFor collectors and stat nerdsFuture Value Radar (FVR) · On the record
Blue Notes · Umpire Grade2026-08-06

NYM @ CLE

Home plate: John Bacon

The zone kept its promises.

B
Umpire Grade
92.9% accurate
0.2
Run Favor
runs, NYM
3
ABS Overturns
of 5 reviewed

What this shows — how John Bacon called the 198 pitches that were taken (no swing), graded against the tracked rulebook strike zone. He got 184 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: Luis Torrens — the ump called it a ball, the robot ruled ball (upheld — ump confirmed).1Challenge 2: Luis Torrens — the ump called it a strike, the robot ruled ball (OVERTURNED — ump overruled).2Challenge 3: Francisco Alvarez — the ump called it a ball, the robot ruled strike (OVERTURNED — ump overruled).3Challenge 4: Marcus Semien — the ump called it a ball, the robot ruled strike (OVERTURNED — ump overruled).4Challenge 5: Luis Torrens — 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. 1-0.393 · 2-2 ball called strike
    Eric Wagaman vs Foster Griffin
  2. 2+0.394 · 2-2 strike called ball
    Bo Bichette vs Foster Griffin
  3. 3+0.288 · 1-2 strike called ball
    A.J. Ewing vs Tim Herrin

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. 1Luis Torrens — ump said ball, robot ruled ball: upheld.
  2. 2Luis Torrens — ump said strike, robot ruled ball: overturned.
  3. 3Francisco Alvarez — ump said ball, robot ruled strike: overturned.
  4. 4Marcus Semien — ump said ball, robot ruled strike: overturned.
  5. 5Luis Torrens — 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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