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Blue Notes · Umpire Grade2026-09-07

AZ @ KC

Home plate: Lance Barksdale

“The zone shrank when the pitchers needed it most.”

C+
Umpire Grade
90.7% accurate
0.4
Run Favor
runs, AZ
4
ABS Overturns
of 7 reviewed

What this shows — how Lance Barksdale called the 161 pitches that were taken (no swing), graded against the tracked rulebook strike zone. He got 146 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: Gabriel Moreno — 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: Salvador Perez — the ump called it a strike, the robot ruled ball (OVERTURNED — ump overruled).3Challenge 4: Geraldo Perdomo — the ump called it a strike, the robot ruled strike (upheld — ump confirmed).4Challenge 5: Carter Jensen — the ump called it a ball, the robot ruled strike (OVERTURNED — ump overruled).5Challenge 6: Carter Jensen — the ump called it a ball, the robot ruled ball (upheld — ump confirmed).6Challenge 7: Nick Loftin — the ump called it a strike, the robot ruled strike (upheld — ump confirmed).7
strike called ballball called strikeABS overturnedABS upheld

The calls that moved the game

  1. 1+0.28▲3 · 1-2 strike called ball
    Jordan Lawlar vs Noah Cameron
  2. 2-0.23▼8 · 0-2 ball called strike
    Carter Jensen vs Brandyn Garcia
  3. 3-0.20▼4 · 2-1 ball called strike
    Vinnie Pasquantino vs Jose Cabrera

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 · 4 overturned (ump overruled) · 3 upheld (ump confirmed). This is the ABS system’s own measurement — Hawk-Eye optical ball-tracking, not our model.

  1. 1Gabriel Moreno — ump said strike, robot ruled ball: overturned.
  2. 2Gabriel Moreno — ump said ball, robot ruled strike: overturned.
  3. 3Salvador Perez — ump said strike, robot ruled ball: overturned.
  4. 4Geraldo Perdomo — ump said strike, robot ruled strike: upheld.
  5. 5Carter Jensen — ump said ball, robot ruled strike: overturned.
  6. 6Carter Jensen — ump said ball, robot ruled ball: upheld.
  7. 7Nick Loftin — ump said strike, robot ruled strike: upheld.

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

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