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Blue Notes · Umpire Grade2026-06-08

BOS @ TB

Home plate: Alan Porter

“This one went to video review more than most.”

B-
Umpire Grade
91.5% accurate
1.2
Run Favor
runs, BOS
6
ABS Overturns
of 8 reviewed

What this shows — how Alan Porter called the 142 pitches that were taken (no swing), graded against the tracked rulebook strike zone. He got 130 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: Nick Fortes — the ump called it a ball, the robot ruled strike (OVERTURNED — ump overruled).1Challenge 2: Ceddanne Rafaela — the ump called it a strike, the robot ruled strike (upheld — ump confirmed).2Challenge 3: Carlos Narváez — the ump called it a ball, the robot ruled strike (OVERTURNED — ump overruled).3Challenge 4: Nick Fortes — the ump called it a ball, the robot ruled strike (OVERTURNED — ump overruled).4Challenge 5: Junior Caminero — the ump called it a strike, the robot ruled strike (upheld — ump confirmed).5Challenge 6: Nick Fortes — the ump called it a ball, the robot ruled strike (OVERTURNED — ump overruled).6Challenge 7: Nick Fortes — the ump called it a ball, the robot ruled strike (OVERTURNED — ump overruled).7Challenge 8: Carlos Narváez — the ump called it a ball, the robot ruled strike (OVERTURNED — ump overruled).8
strike called ballball called strikeABS overturnedABS upheld

The calls that moved the game

  1. 1+0.39▲7 · 2-2 strike called ball· challenged ✓
    Caleb Durbin vs Kevin Kelly
  2. 2+0.39▲8 · 2-2 strike called ball· challenged ✓
    Andruw Monasterio vs Garrett Cleavinger
  3. 3+0.39▼8 · 2-2 strike called ball
    Cedric Mullins vs Danny Coulombe

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

8 pitches went to the robots · 6 overturned (ump overruled) · 2 upheld (ump confirmed). This is the ABS system’s own measurement — Hawk-Eye optical ball-tracking, not our model.

  1. 1Nick Fortes — ump said ball, robot ruled strike: overturned.
  2. 2Ceddanne Rafaela — ump said strike, robot ruled strike: upheld.
  3. 3Carlos Narváez — ump said ball, robot ruled strike: overturned.
  4. 4Nick Fortes — ump said ball, robot ruled strike: overturned.
  5. 5Junior Caminero — ump said strike, robot ruled strike: upheld.
  6. 6Nick Fortes — ump said ball, robot ruled strike: overturned.
  7. 7Nick Fortes — ump said ball, robot ruled strike: overturned.
  8. 8Carlos Narváez — ump said ball, robot ruled strike: overturned.

Our tracked-rulebook zone matched the ABS ruling on 6 of 8 — a zone-definition gap (ABS grades a standardized, height-based zone), not our error.

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