Blue Notes · Umpire Grade2026-07-04
PHI @ KC
Home plate: Alex MacKay
“Nothing that'll trend, and on this beat that's a compliment.”
Umpire Grade
96.0% accurate
Run Favor
runs, KC
ABS Overturns
of 3 reviewed
What this shows — how Alex MacKay called the 150 pitches that were taken (no swing), graded against the tracked rulebook strike zone. He got 144 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+0.20▼5 · 2-1 strike called ball· challenged
Carter Jensen vs Jesús Luzardo - 2+0.20▼8 · 2-1 strike called ball
Carter Jensen vs Orion Kerkering - 3-0.13▲8 · 1-1 ball called strike
Justin Crawford vs Jose Cuas
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.
- 1Alec Bohm — ump said ball, robot ruled strike: overturned.
- 2J.T. Realmuto — ump said ball, robot ruled ball: upheld.
- 3J.T. Realmuto — ump said strike, robot ruled ball: overturned.
Our tracked-rulebook zone matched the ABS ruling on 0 of 3 — a zone-definition gap (ABS grades a standardized, height-based zone), not our error.