AZ @ WSH
Home plate: Dan Merzel
“The kind of night where the umpire is the least of the story.”
What this shows — how Dan Merzel called the 174 pitches that were taken (no swing), graded against the tracked rulebook strike zone. He got 164 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
The calls that moved the game
- 1+0.39▲1 · 2-2 strike called ball
Max Kepler vs Miles Mikolas - 2-0.21▲9 · 3-0 ball called strike
Corbin Carroll vs Matt Krook - 3+0.19▲9 · 2-0 strike called ball
Corbin Carroll vs Matt Krook
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
4 pitches went to the robots · 2 overturned (ump overruled) · 2 upheld (ump confirmed). This is the ABS system’s own measurement — Hawk-Eye optical ball-tracking, not our model.
- 1Harry Ford — ump said strike, robot ruled ball: overturned.
- 2Nolan Arenado — ump said strike, robot ruled strike: upheld.
- 3Gabriel Moreno — ump said ball, robot ruled ball: upheld.
- 4Harry Ford — ump said strike, robot ruled ball: overturned.
Our tracked-rulebook zone matched the ABS ruling on 2 of 4 — a zone-definition gap (ABS grades a standardized, height-based zone), not our error.