Blue Notes · Umpire Grade2026-04-15
COL @ HOU
Home plate: Stu Scheurwater
“The zone shrank when the pitchers needed it most.”
Umpire Grade
88.2% accurate
Run Favor
runs, HOU
ABS Overturns
of 5 reviewed
What this shows — how Stu Scheurwater called the 153 pitches that were taken (no swing), graded against the tracked rulebook strike zone. He got 135 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▼1 · 3-2 strike called ball· challenged ✓
Carlos Correa vs Jose Quintana - 2+0.30▲2 · 3-1 strike called ball
Ezequiel Tovar vs Spencer Arrighetti - 3+0.30▲3 · 3-1 strike called ball
Troy Johnston vs Spencer Arrighetti
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
5 pitches went to the robots · 4 overturned (ump overruled) · 1 upheld (ump confirmed). This is Hawkeye ground truth, no model involved.
- 1Carlos Correa — ump said ball, robot ruled strike: overturned.
- 2Yainer Diaz — ump said strike, robot ruled ball: overturned.
- 3Yainer Diaz — ump said strike, robot ruled ball: overturned.
- 4Jordan Beck — ump said strike, robot ruled strike: upheld.
- 5Edouard Julien — ump said ball, robot ruled strike: overturned.
Our tracked-rulebook zone matched the ABS ruling on 3 of 5 — a zone-definition gap (ABS grades a standardized, height-based zone), not our error.