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RECORD: 0 HIT · 0 MISS · 12 OPEN · FIRST CALL RESOLVES AUG 12
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Blue Notes · Umpire Grade2026-07-05

SD @ LAD

Home plate: Nick Mahrley

“The zone shrank when the pitchers needed it most.”

C
Umpire Grade
89.8% accurate
0.2
Run Favor
runs, SD
2
ABS Overturns
of 6 reviewed

What this shows — how Nick Mahrley called the 186 pitches that were taken (no swing), graded against the tracked rulebook strike zone. He got 167 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: Eliezer Alfonzo — the ump called it a ball, the robot ruled ball (upheld — ump confirmed).1Challenge 2: Xander Bogaerts — the ump called it a strike, the robot ruled strike (upheld — ump confirmed).2Challenge 3: Luis Campusano — the ump called it a strike, the robot ruled ball (OVERTURNED — ump overruled).3Challenge 4: Luis Campusano — the ump called it a ball, the robot ruled ball (upheld — ump confirmed).4Challenge 5: Teoscar Hernández — the ump called it a ball, the robot ruled strike (OVERTURNED — ump overruled).5Challenge 6: Alex Freeland — the ump called it a strike, the robot ruled strike (upheld — ump confirmed).6
strike called ballball called strikeABS overturnedABS upheld

The calls that moved the game

  1. 1+0.39▼2 · 2-2 strike called ball
    Teoscar Hernández vs JP Sears
  2. 2+0.28▲4 · 1-2 strike called ball· challenged
    Xander Bogaerts vs Emmet Sheehan
  3. 3+0.28▲7 · 1-2 strike called ball
    Sung-Mun Song vs Kyle Hurt

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

6 pitches went to the robots · 2 overturned (ump overruled) · 4 upheld (ump confirmed). This is Hawkeye ground truth, no model involved.

  1. 1Eliezer Alfonzo — ump said ball, robot ruled ball: upheld.
  2. 2Xander Bogaerts — ump said strike, robot ruled strike: upheld.
  3. 3Luis Campusano — ump said strike, robot ruled ball: overturned.
  4. 4Luis Campusano — ump said ball, robot ruled ball: upheld.
  5. 5Teoscar Hernández — ump said ball, robot ruled strike: overturned.
  6. 6Alex Freeland — ump said strike, robot ruled strike: upheld.

Our tracked-rulebook zone matched the ABS ruling on 3 of 6 — a zone-definition gap (ABS grades a standardized, height-based zone), not our error.