Fever BaseballFor collectors and stat nerdsFuture Value Radar (FVR) · On the record
Blue Notes · Umpire Grade2026-09-12

KC @ BOS

Home plate: Jim Wolf

“A steady night's work behind the plate.”

B-
Umpire Grade
92.0% accurate
0.3
Run Favor
runs, KC
2
ABS Overturns
of 3 reviewed

What this shows — how Jim Wolf called the 137 pitches that were taken (no swing), graded against the tracked rulebook strike zone, or, on a pitch the ABS (Automated Ball-Strike System) reviewed on a challenge, against its ruling. 126 were right. Below, only the misses are plotted, alongside every challenged pitch.

The zone, as he called it

Challenge 1: Carter Jensen — the ump called it a strike, the robot ruled ball (OVERTURNED — ump overruled).1Challenge 2: Adley Rutschman — the ump called it a ball, the robot ruled strike (OVERTURNED — ump overruled).2Challenge 3: Adley Rutschman — the ump called it a ball, the robot ruled ball (upheld — ump confirmed).3
strike called ballball called strikeABS overturnedABS upheld

The calls that moved the game

  1. 1+0.69▲1 · 3-2 strike called ball· challenged ✓
    Vinnie Pasquantino vs Ranger Suarez
  2. 2-0.20▼2 · 2-1 ball called strike
    Nick Sogard vs Randy Dobnak
  3. 3+0.20▼3 · 2-1 strike called ball
    Jarren Duran vs Randy Dobnak

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. 1Carter Jensen — ump said strike, robot ruled ball: overturned.
  2. 2Adley Rutschman — ump said ball, robot ruled strike: overturned.
  3. 3Adley Rutschman — ump said ball, robot ruled ball: upheld.

Our tracked-rulebook zone matched the ABS ruling on 3 of 3 — a zone-definition gap (ABS grades a standardized, height-based zone). Where the two disagree, the umpire is graded on the ABS ruling.

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