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Blue Notes · Umpire Grade2026-07-20

NYM @ MIL

Home plate: Cory Blaser

“Reliable as a Tuesday: no complaints, no headlines.”

A
Umpire Grade
95.2% accurate
0.8
Run Favor
runs, NYM
3
ABS Overturns
of 4 reviewed

What this shows — how Cory Blaser called the 168 pitches that were taken (no swing), graded against the tracked rulebook strike zone. He got 160 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: Francisco Alvarez — the ump called it a ball, the robot ruled strike (OVERTURNED — ump overruled).1Challenge 2: Francisco Alvarez — the ump called it a strike, the robot ruled ball (OVERTURNED — ump overruled).2Challenge 3: A.J. Ewing — the ump called it a strike, the robot ruled ball (OVERTURNED — ump overruled).3Challenge 4: William Contreras — the ump called it a ball, the robot ruled ball (upheld — ump confirmed).4
strike called ballball called strikeABS overturnedABS upheld

The calls that moved the game

  1. 1-0.28▼1 · 1-2 ball called strike
    William Contreras vs Freddy Peralta
  2. 2+0.28▲4 · 1-2 strike called ball
    Jared Young vs Jacob Misiorowski
  3. 3-0.20▼7 · 2-1 ball called strike
    Andrew Vaughn vs Xzavion Curry

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 the ABS system’s own measurement — Hawk-Eye optical ball-tracking, not our model.

  1. 1Francisco Alvarez — ump said ball, robot ruled strike: overturned.
  2. 2Francisco Alvarez — ump said strike, robot ruled ball: overturned.
  3. 3A.J. Ewing — ump said strike, robot ruled ball: overturned.
  4. 4William Contreras — ump said ball, robot ruled ball: upheld.

Our tracked-rulebook zone matched the ABS ruling on 3 of 4 — a zone-definition gap (ABS grades a standardized, height-based zone), not our error.

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