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Blue Notes · Umpire Grade2026-06-07

SEA @ DET

Home plate: Laz Diaz

“This one went to video review more than most.”

C
Umpire Grade
89.4% accurate
0.7
Run Favor
runs, SEA
5
ABS Overturns
of 9 reviewed

What this shows — how Laz Diaz called the 161 pitches that were taken (no swing), graded against the tracked rulebook strike zone. He got 144 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: Dillon Dingler — the ump called it a ball, the robot ruled strike (OVERTURNED — ump overruled).1Challenge 2: Dillon Dingler — the ump called it a ball, the robot ruled strike (OVERTURNED — ump overruled).2Challenge 3: Gleyber Torres — the ump called it a strike, the robot ruled strike (upheld — ump confirmed).3Challenge 4: Colt Emerson — the ump called it a strike, the robot ruled ball (OVERTURNED — ump overruled).4Challenge 5: Randy Arozarena — the ump called it a strike, the robot ruled strike (upheld — ump confirmed).5Challenge 6: Dillon Dingler — the ump called it a strike, the robot ruled ball (OVERTURNED — ump overruled).6Challenge 7: Jhonny Pereda — the ump called it a ball, the robot ruled ball (upheld — ump confirmed).7Challenge 8: Dillon Dingler — the ump called it a strike, the robot ruled ball (OVERTURNED — ump overruled).8Challenge 9: Dillon Dingler — the ump called it a ball, the robot ruled ball (upheld — ump confirmed).9
strike called ballball called strikeABS overturnedABS upheld

The calls that moved the game

  1. 1+0.39▲1 · 2-2 strike called ball
    Julio Rodríguez vs Jack Flaherty
  2. 2+0.39▲1 · 2-2 strike called ball· challenged ✓
    Josh Naylor vs Jack Flaherty
  3. 3-0.28▼4 · 1-2 ball called strike· challenged ✓
    Dillon Dingler vs Luis Castillo

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

9 pitches went to the robots · 5 overturned (ump overruled) · 4 upheld (ump confirmed). This is the ABS system’s own measurement — Hawk-Eye optical ball-tracking, not our model.

  1. 1Dillon Dingler — ump said ball, robot ruled strike: overturned.
  2. 2Dillon Dingler — ump said ball, robot ruled strike: overturned.
  3. 3Gleyber Torres — ump said strike, robot ruled strike: upheld.
  4. 4Colt Emerson — ump said strike, robot ruled ball: overturned.
  5. 5Randy Arozarena — ump said strike, robot ruled strike: upheld.
  6. 6Dillon Dingler — ump said strike, robot ruled ball: overturned.
  7. 7Jhonny Pereda — ump said ball, robot ruled ball: upheld.
  8. 8Dillon Dingler — ump said strike, robot ruled ball: overturned.
  9. 9Dillon Dingler — ump said ball, robot ruled ball: upheld.

Our tracked-rulebook zone matched the ABS ruling on 9 of 9 — a zone-definition gap (ABS grades a standardized, height-based zone), not our error.

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