Blue Notes · Umpire Grade2026-06-06
NYM @ SD
Home plate: Brian Walsh
“The zone kept its promises.”
Umpire Grade
95.2% accurate
Run Favor
runs, SD
ABS Overturns
of 3 reviewed
What this shows — how Brian Walsh called the 145 pitches that were taken (no swing), graded against the tracked rulebook strike zone. He got 138 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▼3 · 3-1 strike called ball
Sung-Mun Song vs Nolan McLean - 2+0.28▲4 · 1-2 strike called ball
A.J. Ewing vs Griffin Canning - 3+0.20▼3 · 2-1 strike called ball
Fernando Tatis Jr. vs Nolan McLean
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 · 1 overturned (ump overruled) · 2 upheld (ump confirmed). This is the ABS system’s own measurement — Hawk-Eye optical ball-tracking, not our model.
- 1A.J. Ewing — ump said strike, robot ruled strike: upheld.
- 2A.J. Ewing — ump said strike, robot ruled ball: overturned.
- 3Freddy Fermin — ump said ball, robot ruled ball: 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.