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Blue Notes · Umpire Grade2026-09-18

MIL @ BAL

Home plate: Roberto Ortiz

“Generous with the corners — the pitchers said thank you.”

B-
Umpire Grade
91.0% accurate
0.3
Run Favor
runs, MIL
3
ABS Overturns
of 7 reviewed

What this shows — how Roberto Ortiz called the 201 pitches that were taken (no swing), graded against the tracked rulebook strike zone. He got 183 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: William Contreras — the ump called it a ball, the robot ruled ball (upheld — ump confirmed).1Challenge 2: Cooper Pratt — the ump called it a strike, the robot ruled ball (OVERTURNED — ump overruled).2Challenge 3: William Contreras — the ump called it a ball, the robot ruled strike (OVERTURNED — ump overruled).3Challenge 4: William Contreras — the ump called it a strike, the robot ruled strike (upheld — ump confirmed).4Challenge 5: Yennier Cano — the ump called it a ball, the robot ruled ball (upheld — ump confirmed).5Challenge 6: Coby Mayo — the ump called it a strike, the robot ruled ball (OVERTURNED — ump overruled).6Challenge 7: Coby Mayo — 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+0.28▲8 · 1-2 strike called ball
    Jake Bauers vs Josh Walker
  2. 2-0.28▲8 · 1-2 ball called strike
    Garrett Mitchell vs Josh Walker
  3. 3+0.21▲7 · 3-0 strike called ball
    Jackson Chourio vs Yennier Cano

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

  1. 1William Contreras — ump said ball, robot ruled ball: upheld.
  2. 2Cooper Pratt — ump said strike, robot ruled ball: overturned.
  3. 3William Contreras — ump said ball, robot ruled strike: overturned.
  4. 4William Contreras — ump said strike, robot ruled strike: upheld.
  5. 5Yennier Cano — ump said ball, robot ruled ball: upheld.
  6. 6Coby Mayo — ump said strike, robot ruled ball: overturned.
  7. 7Coby Mayo — 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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