Blue Notes · Umpire Grade2026-06-04
PIT @ HOU
Home plate: David Rackley
“Reliable as a Tuesday: no complaints, no headlines.”
Umpire Grade
93.9% accurate
Run Favor
runs, PIT
ABS Overturns
of 1 reviewed
What this shows — how David Rackley called the 148 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+0.23▲7 · 0-2 strike called ball
Bryan Reynolds vs Steven Okert - 2+0.23▲8 · 0-2 strike called ball
Oneil Cruz vs Enyel De Los Santos - 3+0.20▲5 · 2-1 strike called ball
Oneil Cruz vs Kai-Wei Teng
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
1 pitch went to the robots · 0 overturned (ump overruled) · 1 upheld (ump confirmed). This is Hawkeye ground truth, no model involved.
- 1Christian Walker — ump said strike, robot ruled strike: upheld.
Our tracked-rulebook zone matched the ABS ruling on 1 of 1 — a zone-definition gap (ABS grades a standardized, height-based zone), not our error.