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Blue Notes · Umpire Grade2026-06-10

STL @ NYM

Home plate: Stu Scheurwater

“The challenge cart got its steps in.”

C
Umpire Grade
89.9% accurate
0.7
Run Favor
runs, NYM
6
ABS Overturns
of 7 reviewed

What this shows — how Stu Scheurwater called the 158 pitches that were taken (no swing), graded against the tracked rulebook strike zone. He got 142 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: Nelson Velázquez — the ump called it a strike, the robot ruled ball (OVERTURNED — ump overruled).1Challenge 2: Marcus Semien — the ump called it a strike, the robot ruled strike (upheld — ump confirmed).2Challenge 3: Juan Soto — the ump called it a strike, the robot ruled ball (OVERTURNED — ump overruled).3Challenge 4: David Peterson — the ump called it a ball, the robot ruled strike (OVERTURNED — ump overruled).4Challenge 5: Iván Herrera — the ump called it a strike, the robot ruled ball (OVERTURNED — ump overruled).5Challenge 6: Bo Bichette — the ump called it a strike, the robot ruled ball (OVERTURNED — ump overruled).6Challenge 7: Luis Torrens — the ump called it a ball, the robot ruled strike (OVERTURNED — ump overruled).7
strike called ballball called strikeABS overturnedABS upheld

The calls that moved the game

  1. 1-0.39▲1 · 2-2 ball called strike· challenged ✓
    Nelson Velázquez vs Austin Warren
  2. 2-0.23▲8 · 0-2 ball called strike· challenged ✓
    Iván Herrera vs Jonathan Pintaro
  3. 3-0.21▲2 · 3-0 ball called strike
    José Fermín vs David Peterson

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 · 6 overturned (ump overruled) · 1 upheld (ump confirmed). This is the ABS system’s own measurement — Hawk-Eye optical ball-tracking, not our model.

  1. 1Nelson Velázquez — ump said strike, robot ruled ball: overturned.
  2. 2Marcus Semien — ump said strike, robot ruled strike: upheld.
  3. 3Juan Soto — ump said strike, robot ruled ball: overturned.
  4. 4David Peterson — ump said ball, robot ruled strike: overturned.
  5. 5Iván Herrera — ump said strike, robot ruled ball: overturned.
  6. 6Bo Bichette — ump said strike, robot ruled ball: overturned.
  7. 7Luis Torrens — ump said ball, robot ruled strike: overturned.

Our tracked-rulebook zone matched the ABS ruling on 6 of 7 — a zone-definition gap (ABS grades a standardized, height-based zone), not our error.

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