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Blue Notes · Umpire Grade2026-05-10

NYY @ MIL

Home plate: Alex MacKay

“A few too many trips to the challenge cart.”

A-
Umpire Grade
94.0% accurate
0.0
Run Favor
runs, NYY
5
ABS Overturns
of 7 reviewed

What this shows — how Alex MacKay called the 151 pitches that were taken (no swing), graded against the tracked rulebook strike zone. He got 142 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.C. Escarra — the ump called it a ball, the robot ruled strike (OVERTURNED — ump overruled).1Challenge 2: Gary Sánchez — the ump called it a strike, the robot ruled ball (OVERTURNED — ump overruled).2Challenge 3: Gary Sánchez — the ump called it a strike, the robot ruled strike (upheld — ump confirmed).3Challenge 4: J.C. Escarra — the ump called it a ball, the robot ruled strike (OVERTURNED — ump overruled).4Challenge 5: J.C. Escarra — the ump called it a ball, the robot ruled strike (OVERTURNED — ump overruled).5Challenge 6: J.C. Escarra — the ump called it a ball, the robot ruled ball (upheld — ump confirmed).6Challenge 7: José Caballero — the ump called it a strike, the robot ruled ball (OVERTURNED — ump overruled).7
strike called ballball called strikeABS overturnedABS upheld

The calls that moved the game

  1. 1+0.39▼5 · 2-2 strike called ball· challenged ✓
    Gary Sánchez vs Jake Bird
  2. 2+0.23▲8 · 0-2 strike called ball
    Jazz Chisholm Jr. vs Aaron Ashby
  3. 3-0.19▼4 · 2-0 ball called strike· challenged ✓
    Gary Sánchez vs Carlos Rodón

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

7 pitches went to the robots · 5 overturned (ump overruled) · 2 upheld (ump confirmed). This is the ABS system’s own measurement — Hawk-Eye optical ball-tracking, not our model.

  1. 1J.C. Escarra — ump said ball, robot ruled strike: overturned.
  2. 2Gary Sánchez — ump said strike, robot ruled ball: overturned.
  3. 3Gary Sánchez — ump said strike, robot ruled strike: upheld.
  4. 4J.C. Escarra — ump said ball, robot ruled strike: overturned.
  5. 5J.C. Escarra — ump said ball, robot ruled strike: overturned.
  6. 6J.C. Escarra — ump said ball, robot ruled ball: upheld.
  7. 7José Caballero — ump said strike, robot ruled ball: overturned.

Our tracked-rulebook zone matched the ABS ruling on 6 of 7 — a zone-definition gap (ABS grades a standardized, height-based zone), not our error.

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