Fever BaseballFor collectors and stat nerdsFuture Value Radar (FVR) · On the record
Blue Notes · Umpire Grade2026-08-23

SF @ BOS

Home plate: James Jean

If it was close, it was a strike. The hitters noticed.

B-
Umpire Grade
91.5% accurate
0.1
Run Favor
runs, SF
2
ABS Overturns
of 3 reviewed

What this shows — how James Jean called the 106 pitches that were taken (no swing), graded against the tracked rulebook strike zone. He got 97 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: Andrew Knizner — the ump called it a strike, the robot ruled ball (OVERTURNED — ump overruled).1Challenge 2: Ceddanne Rafaela — the ump called it a strike, the robot ruled strike (upheld — ump confirmed).2Challenge 3: Andrew Knizner — the ump called it a strike, the robot ruled ball (OVERTURNED — ump overruled).3
strike called ballball called strikeABS overturnedABS upheld

The calls that moved the game

  1. 1-0.301 · 3-1 ball called strike
    Caleb Durbin vs Matt Wilkinson
  2. 2-0.302 · 3-1 ball called strike
    Nick Sogard vs Matt Wilkinson
  3. 3+0.287 · 1-2 strike called ball
    Willson Contreras vs Sam Hentges

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

  1. 1Andrew Knizner — ump said strike, robot ruled ball: overturned.
  2. 2Ceddanne Rafaela — ump said strike, robot ruled strike: upheld.
  3. 3Andrew Knizner — ump said strike, robot ruled ball: overturned.

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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