Blue Notes · Umpire Grade2026-06-02
PIT @ HOU
Home plate: Louie Krupa
“A workmanlike night — nothing to frame, nothing to fix.”
Umpire Grade
94.5% accurate
Run Favor
runs, PIT
ABS Overturns
of 6 reviewed
What this shows — how Louie Krupa called the 183 pitches that were taken (no swing), graded against the tracked rulebook strike zone. He got 173 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▲7 · 3-2 strike called ball· challenged ✓
Bryan Reynolds vs Steven Okert - 2-0.28▲2 · 1-2 ball called strike
Oneil Cruz vs Mike Burrows - 3+0.19▲8 · 2-0 strike called ball
Spencer Horwitz vs Bryan Abreu
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
6 pitches went to the robots · 2 overturned (ump overruled) · 4 upheld (ump confirmed). This is Hawkeye ground truth, no model involved.
- 1Spencer Horwitz — ump said strike, robot ruled strike: upheld.
- 2Jake Meyers — ump said strike, robot ruled strike: upheld.
- 3Bryan Reynolds — ump said ball, robot ruled strike: overturned.
- 4Bryan Abreu — ump said ball, robot ruled ball: upheld.
- 5Bryan Reynolds — ump said ball, robot ruled strike: overturned.
- 6Jake Mangum — ump said strike, robot ruled strike: upheld.
Our tracked-rulebook zone matched the ABS ruling on 6 of 6 — a zone-definition gap (ABS grades a standardized, height-based zone), not our error.