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Blue Notes · Umpire Grade2026-07-10

BOS @ NYM

Home plate: Alan Porter

“Expanded the plate a touch past its 17 inches.”

D
Umpire Grade
86.6% accurate
0.2
Run Favor
runs, NYM
4
ABS Overturns
of 6 reviewed

What this shows — how Alan Porter called the 172 pitches that were taken (no swing), graded against the tracked rulebook strike zone. He got 149 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: Ceddanne Rafaela — the ump called it a strike, the robot ruled strike (upheld — ump confirmed).1Challenge 2: Connor Wong — the ump called it a ball, the robot ruled strike (OVERTURNED — ump overruled).2Challenge 3: Jorge Polanco — the ump called it a strike, the robot ruled ball (OVERTURNED — ump overruled).3Challenge 4: Anthony Seigler — the ump called it a strike, the robot ruled ball (OVERTURNED — ump overruled).4Challenge 5: Francisco Alvarez — the ump called it a ball, the robot ruled ball (upheld — ump confirmed).5Challenge 6: Jarren Duran — the ump called it a strike, the robot ruled ball (OVERTURNED — ump overruled).6
strike called ballball called strikeABS overturnedABS upheld

The calls that moved the game

  1. 1-0.69▲9 · 3-2 ball called strike· challenged ✓
    Jarren Duran vs Cionel Pérez
  2. 2-0.39▼1 · 2-2 ball called strike
    Juan Soto vs Sonny Gray
  3. 3+0.39▲3 · 2-2 strike called ball
    Romy Gonzalez vs Nolan McLean

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. 1Ceddanne Rafaela — ump said strike, robot ruled strike: upheld.
  2. 2Connor Wong — ump said ball, robot ruled strike: overturned.
  3. 3Jorge Polanco — ump said strike, robot ruled ball: overturned.
  4. 4Anthony Seigler — ump said strike, robot ruled ball: overturned.
  5. 5Francisco Alvarez — ump said ball, robot ruled ball: upheld.
  6. 6Jarren Duran — ump said strike, robot ruled ball: overturned.

Our tracked-rulebook zone matched the ABS ruling on 5 of 6 — a zone-definition gap (ABS grades a standardized, height-based zone), not our error.

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