Blue Notes · Umpire Grade2026-04-07
SEA @ TEX
Home plate: Alan Porter
“A workmanlike night — nothing to frame, nothing to fix.”
Umpire Grade
95.0% accurate
Run Favor
runs, TEX
ABS Overturns
of 1 reviewed
What this shows — how Alan Porter called the 100 pitches that were taken (no swing), graded against the tracked rulebook strike zone. He got 95 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
strike called ballball called strikeABS overturnedABS upheld
The calls that moved the game
- 1+0.13▼6 · 1-1 strike called ball
Wyatt Langford vs George Kirby - 2-0.09▼4 · 0-0 ball called strike
Jake Burger vs George Kirby - 3-0.09▲6 · 0-0 ball called strike
Josh Naylor vs Nathan Eovaldi
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
1 pitch went to the robots · 0 overturned (ump overruled) · 1 upheld (ump confirmed). This is Hawkeye ground truth, no model involved.
- 1Luke Raley — ump said strike, robot ruled strike: upheld.
Our tracked-rulebook zone matched the ABS ruling on 1 of 1 — a zone-definition gap (ABS grades a standardized, height-based zone), not our error.