Fever BaseballFuture Value Radar (FVR) · On the record
RECORD: 0 HIT · 0 MISS · 12 OPEN · FIRST CALL RESOLVES AUG 12
Support the paperGet the Digest
Blue Notes · Umpire Grade2026-04-08

SD @ PIT

Home plate: Nick Mahrley

“Down the middle. Both dugouts had the same zone.”

A+
Umpire Grade
98.5% accurate
0.4
Run Favor
runs, PIT
3
ABS Overturns
of 4 reviewed

What this shows — how Nick Mahrley called the 135 pitches that were taken (no swing), graded against the tracked rulebook strike zone. He got 133 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 Campusano — the ump called it a strike, the robot ruled ball (OVERTURNED — ump overruled).1Challenge 2: Ramón Laureano — the ump called it a strike, the robot ruled strike (upheld — ump confirmed).2Challenge 3: Luis Campusano — the ump called it a strike, the robot ruled ball (OVERTURNED — ump overruled).3Challenge 4: Joey Bart — the ump called it a strike, the robot ruled ball (OVERTURNED — ump overruled).4
strike called ballball called strikeABS overturnedABS upheld

The calls that moved the game

  1. 1+0.23▼3 · 0-2 strike called ball
    Ryan O'Hearn vs Michael King
  2. 2+0.13▼2 · 1-0 strike called ball
    Spencer Horwitz vs Michael King

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

4 pitches went to the robots · 3 overturned (ump overruled) · 1 upheld (ump confirmed). This is Hawkeye ground truth, no model involved.

  1. 1Luis Campusano — ump said strike, robot ruled ball: overturned.
  2. 2Ramón Laureano — ump said strike, robot ruled strike: upheld.
  3. 3Luis Campusano — ump said strike, robot ruled ball: overturned.
  4. 4Joey Bart — ump said strike, robot ruled ball: overturned.

Our tracked-rulebook zone matched the ABS ruling on 1 of 4 — a zone-definition gap (ABS grades a standardized, height-based zone), not our error.