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Blue Notes · Umpire Grade2026-06-22

CLE @ CWS

Home plate: Nick Mahrley

“A tilt to the evening — the numbers say which way.”

B
Umpire Grade
92.5% accurate
1.1
Run Favor
runs, CWS
3
ABS Overturns
of 7 reviewed

What this shows — how Nick Mahrley called the 174 pitches that were taken (no swing), graded against the tracked rulebook strike zone. He got 161 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: Sam Antonacci — the ump called it a strike, the robot ruled ball (OVERTURNED — ump overruled).1Challenge 2: Rhys Hoskins — the ump called it a strike, the robot ruled ball (OVERTURNED — ump overruled).2Challenge 3: Sam Antonacci — the ump called it a strike, the robot ruled strike (upheld — ump confirmed).3Challenge 4: Kyle Teel — the ump called it a strike, the robot ruled strike (upheld — ump confirmed).4Challenge 5: Travis Bazzana — the ump called it a strike, the robot ruled ball (OVERTURNED — ump overruled).5Challenge 6: Travis Bazzana — the ump called it a strike, the robot ruled strike (upheld — ump confirmed).6Challenge 7: Kyle Manzardo — 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+0.30▼9 · 3-1 strike called ball
    Braden Montgomery vs Cade Smith
  2. 2+0.23▼9 · 0-2 strike called ball
    Jacob Gonzalez vs Cade Smith
  3. 3-0.21▲7 · 3-0 ball called strike
    Steven Kwan vs Grant Taylor

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. 1Sam Antonacci — ump said strike, robot ruled ball: overturned.
  2. 2Rhys Hoskins — ump said strike, robot ruled ball: overturned.
  3. 3Sam Antonacci — ump said strike, robot ruled strike: upheld.
  4. 4Kyle Teel — ump said strike, robot ruled strike: upheld.
  5. 5Travis Bazzana — ump said strike, robot ruled ball: overturned.
  6. 6Travis Bazzana — ump said strike, robot ruled strike: upheld.
  7. 7Kyle Manzardo — ump said strike, robot ruled strike: upheld.

Our tracked-rulebook zone matched the ABS ruling on 7 of 7 — a zone-definition gap (ABS grades a standardized, height-based zone), not our error.

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