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RECORD: 0 HIT · 0 MISS · 12 OPEN · FIRST CALL RESOLVES AUG 12
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Blue Notes · Umpire Grade2026-07-19

PIT @ CLE

Home plate: Alex MacKay

“The zone had wings tonight.”

D
Umpire Grade
88.4% accurate
0.5
Run Favor
runs, PIT
4
ABS Overturns
of 6 reviewed

What this shows — how Alex MacKay called the 129 pitches that were taken (no swing), graded against the tracked rulebook strike zone. He got 114 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: Esmerlyn Valdez — the ump called it a ball, the robot ruled strike (OVERTURNED — ump overruled).1Challenge 2: Patrick Bailey — the ump called it a strike, the robot ruled ball (OVERTURNED — ump overruled).2Challenge 3: Patrick Bailey — the ump called it a strike, the robot ruled ball (OVERTURNED — ump overruled).3Challenge 4: Patrick Bailey — the ump called it a ball, the robot ruled ball (upheld — ump confirmed).4Challenge 5: Henry Davis — the ump called it a strike, the robot ruled ball (OVERTURNED — ump overruled).5Challenge 6: Henry Davis — the ump called it a ball, the robot ruled ball (upheld — ump confirmed).6
strike called ballball called strikeABS overturnedABS upheld

The calls that moved the game

  1. 1-0.28▼1 · 1-2 ball called strike
    Travis Bazzana vs Paul Skenes
  2. 2-0.28▼9 · 1-2 ball called strike· challenged ✓
    Travis Bazzana vs Isaac Mattson
  3. 3-0.23▲9 · 0-2 ball called strike
    Bryan Reynolds vs Will Dion

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

  1. 1Esmerlyn Valdez — ump said ball, robot ruled strike: overturned.
  2. 2Patrick Bailey — ump said strike, robot ruled ball: overturned.
  3. 3Patrick Bailey — ump said strike, robot ruled ball: overturned.
  4. 4Patrick Bailey — ump said ball, robot ruled ball: upheld.
  5. 5Henry Davis — ump said strike, robot ruled ball: overturned.
  6. 6Henry Davis — ump said ball, robot ruled ball: upheld.

Our tracked-rulebook zone matched the ABS ruling on 3 of 6 — a zone-definition gap (ABS grades a standardized, height-based zone), not our error.