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Blue Notes · Umpire Grade2026-09-04

DET @ CLE

Home plate: Tom Hanahan

“Hawkeye clocked in early and stayed late.”

D
Umpire Grade
88.8% accurate
0.4
Run Favor
runs, CLE
7
ABS Overturns
of 8 reviewed

What this shows — how Tom Hanahan called the 161 pitches that were taken (no swing), graded against the tracked rulebook strike zone, or, on a pitch the ABS (Automated Ball-Strike System) reviewed on a challenge, against its ruling. 143 were right. Below, only the misses are plotted, alongside every challenged pitch.

The zone, as he called it

Challenge 1: Patrick Bailey — 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: Spencer Torkelson — the ump called it a strike, the robot ruled ball (OVERTURNED — ump overruled).3Challenge 4: Steven Kwan — the ump called it a strike, the robot ruled ball (OVERTURNED — ump overruled).4Challenge 5: Dillon Dingler — the ump called it a ball, the robot ruled strike (OVERTURNED — ump overruled).5Challenge 6: Patrick Bailey — the ump called it a strike, the robot ruled strike (upheld — ump confirmed).6Challenge 7: Chase DeLauter — the ump called it a strike, the robot ruled ball (OVERTURNED — ump overruled).7Challenge 8: Patrick Bailey — the ump called it a ball, the robot ruled strike (OVERTURNED — ump overruled).8
strike called ballball called strikeABS overturnedABS upheld

The calls that moved the game

  1. 1+0.69▲1 · 3-2 strike called ball
    Kevin McGonigle vs Logan Allen
  2. 2+0.69▼1 · 3-2 strike called ball· challenged ✓
    Nathaniel Lowe vs Keider Montero
  3. 3-0.69▲9 · 3-2 ball called strike
    Gleyber Torres vs Cade Smith

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 · 7 overturned (ump overruled) · 1 upheld (ump confirmed). This is the ABS system’s own measurement — Hawk-Eye optical ball-tracking, not our model.

  1. 1Patrick Bailey — ump said ball, robot ruled strike: overturned.
  2. 2Dillon Dingler — ump said ball, robot ruled strike: overturned.
  3. 3Spencer Torkelson — ump said strike, robot ruled ball: overturned.
  4. 4Steven Kwan — ump said strike, robot ruled ball: overturned.
  5. 5Dillon Dingler — ump said ball, robot ruled strike: overturned.
  6. 6Patrick Bailey — ump said strike, robot ruled strike: upheld.
  7. 7Chase DeLauter — ump said strike, robot ruled ball: overturned.
  8. 8Patrick Bailey — ump said ball, robot ruled strike: overturned.

Our tracked-rulebook zone matched the ABS ruling on 8 of 8 — a zone-definition gap (ABS grades a standardized, height-based zone). Where the two disagree, the umpire is graded on the ABS ruling.

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