Blue Notes · Umpire Grade2026-05-08
DET @ KC
Home plate: Dexter Kelley
“If it was close, it was a strike. The hitters noticed.”
Umpire Grade
88.9% accurate
Run Favor
runs, DET
ABS Overturns
of 4 reviewed
What this shows — how Dexter Kelley called the 153 pitches that were taken (no swing), graded against the tracked rulebook strike zone. He got 136 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
- 1-0.69▼4 · 3-2 ball called strike
Carter Jensen vs Keider Montero - 2-0.39▲6 · 2-2 ball called strike
Riley Greene vs Kris Bubic - 3+0.28▲3 · 1-2 strike called ball
Zack Short vs Kris Bubic
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
4 pitches went to the robots · 1 overturned (ump overruled) · 3 upheld (ump confirmed). This is Hawkeye ground truth, no model involved.
- 1Kris Bubic — ump said ball, robot ruled ball: upheld.
- 2Bobby Witt Jr. — ump said ball, robot ruled strike: overturned.
- 3Elias Díaz — ump said ball, robot ruled ball: upheld.
- 4Dillon Dingler — ump said ball, robot ruled ball: upheld.
Our tracked-rulebook zone matched the ABS ruling on 3 of 4 — a zone-definition gap (ABS grades a standardized, height-based zone), not our error.