Fever BaseballFor collectors and stat nerdsFuture Value Radar (FVR) · On the record
Blue Notes · Umpire Grade2026-09-13

SEA @ ATH

Home plate: Andy Fletcher

An honest evening's grade: nothing loud, nothing missed by much.

B+
Umpire Grade
93.6% accurate
0.1
Run Favor
runs, SEA
4
ABS Overturns
of 6 reviewed

What this shows — how Andy Fletcher called the 173 pitches that were taken (no swing), graded against the tracked rulebook strike zone. He got 162 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: Josh Naylor — the ump called it a strike, the robot ruled strike (upheld — ump confirmed).1Challenge 2: Michael Arroyo — the ump called it a strike, the robot ruled ball (OVERTURNED — ump overruled).2Challenge 3: Zack Gelof — the ump called it a strike, the robot ruled ball (OVERTURNED — ump overruled).3Challenge 4: Jhonny Pereda — the ump called it a ball, the robot ruled strike (OVERTURNED — ump overruled).4Challenge 5: Jhonny Pereda — the ump called it a ball, the robot ruled ball (upheld — ump confirmed).5Challenge 6: Brian Serven — the ump called it a ball, the robot ruled strike (OVERTURNED — ump overruled).6
strike called ballball called strikeABS overturnedABS upheld

The calls that moved the game

  1. 1+0.138 · 1-1 strike called ball· challenged
    J.P. Crawford vs Hogan Harris
  2. 2+0.135 · 1-0 strike called ball
    Josh Naylor vs Scott Blewett
  3. 3-0.138 · 1-0 ball called strike
    Jhonny Pereda vs Hogan Harris

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

6 pitches went to the robots · 4 overturned (ump overruled) · 2 upheld (ump confirmed). This is the ABS system’s own measurement — Hawk-Eye optical ball-tracking, not our model.

  1. 1Josh Naylor — ump said strike, robot ruled strike: upheld.
  2. 2Michael Arroyo — ump said strike, robot ruled ball: overturned.
  3. 3Zack Gelof — ump said strike, robot ruled ball: overturned.
  4. 4Jhonny Pereda — ump said ball, robot ruled strike: overturned.
  5. 5Jhonny Pereda — ump said ball, robot ruled ball: upheld.
  6. 6Brian Serven — ump said ball, robot ruled strike: overturned.

Our tracked-rulebook zone matched the ABS ruling on 6 of 6 — a zone-definition gap (ABS grades a standardized, height-based zone), not our error.

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