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RECORD: 2 HIT · 2 MISS · 11 OPEN · C0007 RESOLVED: HIT
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Blue Notes · Umpire Grade2026-08-18

LAA @ HOU

Home plate: Alfonso Márquez

“A busy night for the machines in the truck.”

A-
Umpire Grade
94.3% accurate
1.1
Run Favor
runs, HOU
5
ABS Overturns
of 8 reviewed

What this shows — how Alfonso Márquez called the 140 pitches that were taken (no swing), graded against the tracked rulebook strike zone. He got 132 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: Yainer Diaz — the ump called it a strike, the robot ruled ball (OVERTURNED — ump overruled).1Challenge 2: Daulton Varsho — the ump called it a ball, the robot ruled strike (OVERTURNED — ump overruled).2Challenge 3: Yainer Diaz — the ump called it a strike, the robot ruled ball (OVERTURNED — ump overruled).3Challenge 4: Nolan Schanuel — the ump called it a strike, the robot ruled strike (upheld — ump confirmed).4Challenge 5: Yainer Diaz — the ump called it a strike, the robot ruled ball (OVERTURNED — ump overruled).5Challenge 6: Jose Altuve — the ump called it a ball, the robot ruled strike (OVERTURNED — ump overruled).6Challenge 7: Cam Smith — the ump called it a strike, the robot ruled strike (upheld — ump confirmed).7Challenge 8: Tyler Heineman — the ump called it a ball, the robot ruled ball (upheld — ump confirmed).8
strike called ballball called strikeABS overturnedABS upheld

The calls that moved the game

  1. 1+0.30▼1 · 3-1 strike called ball
    Isaac Paredes vs George Klassen
  2. 2+0.19▼7 · 2-0 strike called ball· challenged ✓
    Jose Altuve vs George Klassen
  3. 3+0.19▼9 · 2-0 strike called ball· challenged
    Jose Altuve vs Ben Joyce

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

8 pitches went to the robots · 5 overturned (ump overruled) · 3 upheld (ump confirmed). This is the ABS system’s own measurement — Hawk-Eye optical ball-tracking, not our model.

  1. 1Yainer Diaz — ump said strike, robot ruled ball: overturned.
  2. 2Daulton Varsho — ump said ball, robot ruled strike: overturned.
  3. 3Yainer Diaz — ump said strike, robot ruled ball: overturned.
  4. 4Nolan Schanuel — ump said strike, robot ruled strike: upheld.
  5. 5Yainer Diaz — ump said strike, robot ruled ball: overturned.
  6. 6Jose Altuve — ump said ball, robot ruled strike: overturned.
  7. 7Cam Smith — ump said strike, robot ruled strike: upheld.
  8. 8Tyler Heineman — ump said ball, robot ruled ball: upheld.

Our tracked-rulebook zone matched the ABS ruling on 3 of 8 — a zone-definition gap (ABS grades a standardized, height-based zone), not our error.

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