Fever BaseballFor collectors and stat nerdsFuture Value Radar (FVR) · On the record
Blue Notes · Umpire Grade2026-07-30

BOS @ ATH

Home plate: Nate Tomlinson

Called it the way the rulebook drew it up.

A
Umpire Grade
95.8% accurate
0.3
Run Favor
runs, ATH
1
ABS Overturns
of 3 reviewed

What this shows — how Nate Tomlinson called the 118 pitches that were taken (no swing), graded against the tracked rulebook strike zone. He got 113 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: Jonah Heim — the ump called it a strike, the robot ruled ball (OVERTURNED — ump overruled).1Challenge 2: Connor Wong — the ump called it a ball, the robot ruled ball (upheld — ump confirmed).2Challenge 3: Colby Thomas — the ump called it a strike, the robot ruled strike (upheld — ump confirmed).3
strike called ballball called strikeABS overturnedABS upheld

The calls that moved the game

  1. 1-0.197 · 2-0 ball called strike
    Jacob Wilson vs Sonny Gray
  2. 2+0.133 · 1-0 strike called ball
    Carlos Cortes vs Sonny Gray
  3. 3+0.136 · 1-0 strike called ball
    Donovan Walton vs Sonny Gray

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

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

  1. 1Jonah Heim — ump said strike, robot ruled ball: overturned.
  2. 2Connor Wong — ump said ball, robot ruled ball: upheld.
  3. 3Colby Thomas — ump said strike, robot ruled strike: upheld.

Our tracked-rulebook zone matched the ABS ruling on 1 of 3 — a zone-definition gap (ABS grades a standardized, height-based zone), not our error.

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