Fever BaseballFor collectors and stat nerdsFuture Value Radar (FVR) · On the record
Blue Notes · Umpire Grade2026-09-04

Reliable as a Tuesday: no complaints, no headlines.

A-
Umpire Grade
94.1% accurate
0.9
Run Favor
runs, ATL
2
ABS Overturns
of 3 reviewed

What this shows — how Steven Jaschinski called the 136 pitches that were taken (no swing), graded against the tracked rulebook strike zone. He got 128 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: J.T. Realmuto — the ump called it a ball, the robot ruled strike (OVERTURNED — ump overruled).1Challenge 2: J.T. Realmuto — the ump called it a ball, the robot ruled ball (upheld — ump confirmed).2Challenge 3: Sean Murphy — the ump called it a ball, the robot ruled strike (OVERTURNED — ump overruled).3
strike called ballball called strikeABS overturnedABS upheld

The calls that moved the game

  1. 1-0.284 · 1-2 ball called strike
    Bryan De La Cruz vs Chris Sale
  2. 2-0.192 · 2-0 ball called strike
    Luis Arraez vs Chris Sale
  3. 3+0.133 · 1-1 strike called ball
    Matt Olson vs Cristopher Sánchez

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. 1J.T. Realmuto — ump said ball, robot ruled strike: overturned.
  2. 2J.T. Realmuto — ump said ball, robot ruled ball: upheld.
  3. 3Sean Murphy — ump said ball, robot ruled strike: overturned.

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

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