Blue Notes · Umpire Grade2026-04-24
SEA @ STL
Home plate: Edwin Moscoso
“An honest evening's grade: nothing loud, nothing missed by much.”
Umpire Grade
94.0% accurate
Run Favor
runs, STL
ABS Overturns
of 3 reviewed
What this shows — how Edwin Moscoso called the 149 pitches that were taken (no swing), graded against the tracked rulebook strike zone. He got 140 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+0.30▼4 · 3-1 strike called ball
Alec Burleson vs George Kirby - 2+0.20▲4 · 2-1 strike called ball
Josh Naylor vs Andre Pallante - 3-0.20▲6 · 2-1 ball called strike
Rob Refsnyder vs Justin Bruihl
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
3 pitches went to the robots · 2 overturned (ump overruled) · 1 upheld (ump confirmed). This is Hawkeye ground truth, no model involved.
- 1Cal Raleigh — ump said strike, robot ruled ball: overturned.
- 2Luke Raley — ump said ball, robot ruled strike: overturned.
- 3Josh Naylor — ump said strike, robot ruled strike: upheld.
Our tracked-rulebook zone matched the ABS ruling on 2 of 3 — a zone-definition gap (ABS grades a standardized, height-based zone), not our error.