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Blue Notes · Umpire Grade2026-05-15

KC @ STL

Home plate: Will Little

“A tilt to the evening — the numbers say which way.”

B-
Umpire Grade
91.4% accurate
1.0
Run Favor
runs, STL
4
ABS Overturns
of 6 reviewed

What this shows — how Will Little called the 162 pitches that were taken (no swing), graded against the tracked rulebook strike zone. He got 148 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: Salvador Perez — the ump called it a ball, the robot ruled strike (OVERTURNED — ump overruled).1Challenge 2: Bobby Witt Jr. — the ump called it a strike, the robot ruled ball (OVERTURNED — ump overruled).2Challenge 3: Salvador Perez — the ump called it a ball, the robot ruled strike (OVERTURNED — ump overruled).3Challenge 4: Pedro Pagés — the ump called it a ball, the robot ruled ball (upheld — ump confirmed).4Challenge 5: Salvador Perez — the ump called it a ball, the robot ruled strike (OVERTURNED — ump overruled).5Challenge 6: Gordon Graceffo — the ump called it a ball, the robot ruled ball (upheld — ump confirmed).6
strike called ballball called strikeABS overturnedABS upheld

The calls that moved the game

  1. 1+0.69▼3 · 3-2 strike called ball
    Nathan Church vs Michael Wacha
  2. 2+0.39▲4 · 2-2 strike called ball
    Isaac Collins vs Dustin May
  3. 3+0.39▼9 · 2-2 strike called ball· challenged ✓
    Pedro Pagés vs Matt Strahm

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. 1Salvador Perez — ump said ball, robot ruled strike: overturned.
  2. 2Bobby Witt Jr. — ump said strike, robot ruled ball: overturned.
  3. 3Salvador Perez — ump said ball, robot ruled strike: overturned.
  4. 4Pedro Pagés — ump said ball, robot ruled ball: upheld.
  5. 5Salvador Perez — ump said ball, robot ruled strike: overturned.
  6. 6Gordon Graceffo — ump said ball, robot ruled ball: upheld.

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

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