Blue Notes · Umpire Grade2026-04-30
KC @ ATH
Home plate: D.J. Reyburn
“Expanded the plate a touch past its 17 inches.”
Umpire Grade
94.6% accurate
Run Favor
runs, ATH
ABS Overturns
of 3 reviewed
What this shows — how D.J. Reyburn called the 147 pitches that were taken (no swing), graded against the tracked rulebook strike zone. He got 139 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
- 1-0.21▼1 · 3-0 ball called strike
Colby Thomas vs Noah Cameron - 2-0.19▲5 · 2-0 ball called strike
Isaac Collins vs Luis Medina - 3-0.19▲6 · 2-0 ball called strike
Elias Díaz vs Luis Medina
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.
- 1Austin Wynns — ump said strike, robot ruled ball: overturned.
- 2Elias Díaz — ump said ball, robot ruled ball: upheld.
- 3Colby Thomas — ump said ball, robot ruled strike: 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.