Blue Notes · Umpire Grade2026-03-28
KC @ ATL
Home plate: Mike Muchlinski
“Called a fair game and let the players decide it.”
Umpire Grade
95.5% accurate
Run Favor
runs, KC
ABS Overturns
of 3 reviewed
What this shows — how Mike Muchlinski called the 133 pitches that were taken (no swing), graded against the tracked rulebook strike zone. He got 127 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+0.23▲1 · 0-2 strike called ball· challenged
Vinnie Pasquantino vs Reynaldo López - 2-0.13▼2 · 1-0 ball called strike
Ozzie Albies vs Michael Wacha - 3-0.13▲8 · 1-0 ball called strike
Vinnie Pasquantino vs Aaron Bummer
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 Hawkeye ground truth, no model involved.
- 1Drake Baldwin — ump said ball, robot ruled ball: upheld.
- 2Ronald Acuña Jr. — ump said strike, robot ruled strike: upheld.
- 3Salvador Perez — ump said strike, robot ruled ball: overturned.
Our tracked-rulebook zone matched the ABS ruling on 1 of 3 — a zone-definition gap (ABS grades a standardized, height-based zone), not our error.