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Blue Notes · Umpire Grade2026-08-02

STL @ TOR

Home plate: Jordan Baker

“Solid and unspectacular — exactly what the job asks.”

A
Umpire Grade
95.2% accurate
0.4
Run Favor
runs, STL
4
ABS Overturns
of 7 reviewed

What this shows — how Jordan Baker called the 146 pitches that were taken (no swing), graded against the tracked rulebook strike zone. He got 139 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: Vladimir Guerrero Jr. — the ump called it a strike, the robot ruled strike (upheld — ump confirmed).1Challenge 2: Alejandro Kirk — the ump called it a ball, the robot ruled strike (OVERTURNED — ump overruled).2Challenge 3: Alejandro Kirk — the ump called it a ball, the robot ruled strike (OVERTURNED — ump overruled).3Challenge 4: Alejandro Kirk — the ump called it a ball, the robot ruled strike (OVERTURNED — ump overruled).4Challenge 5: Jordan Walker — the ump called it a strike, the robot ruled ball (OVERTURNED — ump overruled).5Challenge 6: Iván Herrera — the ump called it a ball, the robot ruled ball (upheld — ump confirmed).6Challenge 7: Alejandro Kirk — the ump called it a strike, the robot ruled strike (upheld — ump confirmed).7
strike called ballball called strikeABS overturnedABS upheld

The calls that moved the game

  1. 1-0.39▲1 · 2-2 ball called strike
    Alec Burleson vs Max Scherzer
  2. 2+0.39▲8 · 2-2 strike called ball· challenged ✓
    Iván Herrera vs Spencer Miles
  3. 3+0.13▲6 · 1-1 strike called ball· challenged ✓
    Alec Burleson vs Max Scherzer

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 · 4 overturned (ump overruled) · 3 upheld (ump confirmed). This is the ABS system’s own measurement — Hawk-Eye optical ball-tracking, not our model.

  1. 1Vladimir Guerrero Jr. — ump said strike, robot ruled strike: upheld.
  2. 2Alejandro Kirk — ump said ball, robot ruled strike: overturned.
  3. 3Alejandro Kirk — ump said ball, robot ruled strike: overturned.
  4. 4Alejandro Kirk — ump said ball, robot ruled strike: overturned.
  5. 5Jordan Walker — ump said strike, robot ruled ball: overturned.
  6. 6Iván Herrera — ump said ball, robot ruled ball: upheld.
  7. 7Alejandro Kirk — ump said strike, robot ruled strike: upheld.

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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