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Blue Notes · Umpire Grade2026-06-12

AZ @ CIN

Home plate: Alex MacKay

“ABS had a long evening on this one.”

B+
Umpire Grade
93.0% accurate
0.2
Run Favor
runs, CIN
6
ABS Overturns
of 6 reviewed

What this shows — how Alex MacKay called the 201 pitches that were taken (no swing), graded against the tracked rulebook strike zone. He got 187 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: JJ Bleday — the ump called it a strike, the robot ruled ball (OVERTURNED — ump overruled).1Challenge 2: Gabriel Moreno — the ump called it a ball, the robot ruled strike (OVERTURNED — ump overruled).2Challenge 3: JJ Bleday — the ump called it a strike, the robot ruled ball (OVERTURNED — ump overruled).3Challenge 4: Tyler Stephenson — the ump called it a ball, the robot ruled strike (OVERTURNED — ump overruled).4Challenge 5: Gabriel Moreno — the ump called it a ball, the robot ruled strike (OVERTURNED — ump overruled).5Challenge 6: Tyler Stephenson — the ump called it a ball, the robot ruled strike (OVERTURNED — ump overruled).6
strike called ballball called strikeABS overturnedABS upheld

The calls that moved the game

  1. 1+0.23▲3 · 0-2 strike called ball· challenged ✓
    Geraldo Perdomo vs Nick Lodolo
  2. 2+0.23▲8 · 0-2 strike called ball· challenged ✓
    Ketel Marte vs Zach Maxwell
  3. 3+0.20▼7 · 2-1 strike called ball
    Matt McLain vs Taylor Clarke

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

6 pitches went to the robots · 6 overturned (ump overruled) · 0 upheld (ump confirmed). This is the ABS system’s own measurement — Hawk-Eye optical ball-tracking, not our model.

  1. 1JJ Bleday — ump said strike, robot ruled ball: overturned.
  2. 2Gabriel Moreno — ump said ball, robot ruled strike: overturned.
  3. 3JJ Bleday — ump said strike, robot ruled ball: overturned.
  4. 4Tyler Stephenson — ump said ball, robot ruled strike: overturned.
  5. 5Gabriel Moreno — ump said ball, robot ruled strike: overturned.
  6. 6Tyler Stephenson — ump said ball, robot ruled strike: overturned.

Our tracked-rulebook zone matched the ABS ruling on 4 of 6 — a zone-definition gap (ABS grades a standardized, height-based zone), not our error.

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