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Blue Notes · Umpire Grade2026-04-04

MIA @ NYY

Home plate: Ron Kulpa

“The robots earned their keep tonight.”

C+
Umpire Grade
90.1% accurate
2.0
Run Favor
runs, NYY
7
ABS Overturns
of 9 reviewed

What this shows — how Ron Kulpa called the 233 pitches that were taken (no swing), graded against the tracked rulebook strike zone. He got 210 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: Austin Wells — the ump called it a ball, the robot ruled ball (upheld — ump confirmed).1Challenge 2: Austin Wells — the ump called it a ball, the robot ruled strike (OVERTURNED — ump overruled).2Challenge 3: Connor Norby — the ump called it a strike, the robot ruled ball (OVERTURNED — ump overruled).3Challenge 4: Agustín Ramírez — the ump called it a ball, the robot ruled strike (OVERTURNED — ump overruled).4Challenge 5: Agustín Ramírez — the ump called it a ball, the robot ruled strike (OVERTURNED — ump overruled).5Challenge 6: Agustín Ramírez — the ump called it a ball, the robot ruled strike (OVERTURNED — ump overruled).6Challenge 7: Ben Rice — the ump called it a strike, the robot ruled strike (upheld — ump confirmed).7Challenge 8: Agustín Ramírez — the ump called it a ball, the robot ruled strike (OVERTURNED — ump overruled).8Challenge 9: Owen Caissie — the ump called it a strike, the robot ruled ball (OVERTURNED — ump overruled).9
strike called ballball called strikeABS overturnedABS upheld

The calls that moved the game

  1. 1+0.69▼1 · 3-2 strike called ball
    Trent Grisham vs Max Meyer
  2. 2-0.39▼7 · 2-2 ball called strike
    Jazz Chisholm Jr. vs Calvin Faucher
  3. 3-0.39▲9 · 2-2 ball called strike· challenged ✓
    Owen Caissie vs David Bednar

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

9 pitches went to the robots · 7 overturned (ump overruled) · 2 upheld (ump confirmed). This is the ABS system’s own measurement — Hawk-Eye optical ball-tracking, not our model.

  1. 1Austin Wells — ump said ball, robot ruled ball: upheld.
  2. 2Austin Wells — ump said ball, robot ruled strike: overturned.
  3. 3Connor Norby — ump said strike, robot ruled ball: overturned.
  4. 4Agustín Ramírez — ump said ball, robot ruled strike: overturned.
  5. 5Agustín Ramírez — ump said ball, robot ruled strike: overturned.
  6. 6Agustín Ramírez — ump said ball, robot ruled strike: overturned.
  7. 7Ben Rice — ump said strike, robot ruled strike: upheld.
  8. 8Agustín Ramírez — ump said ball, robot ruled strike: overturned.
  9. 9Owen Caissie — ump said strike, robot ruled ball: overturned.

Our tracked-rulebook zone matched the ABS ruling on 9 of 9 — a zone-definition gap (ABS grades a standardized, height-based zone), not our error.

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