Blue Notes · Umpire Grade2026-09-01
“Off the corner was close enough tonight.”
Umpire Grade
93.1% accurate
Run Favor
runs, SD
ABS Overturns
of 2 reviewed
What this shows — how Ron Kulpa called the 145 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+0.23▼1 · 0-2 strike called ball
Héctor Rodríguez vs Randy Vásquez - 2-0.19▼7 · 2-0 ball called strike· challenged ✓
Dane Myers vs Yuki Matsui - 3-0.13▼6 · 1-1 ball called strike
Matt McLain vs Bradgley Rodriguez
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
2 pitches went to the robots · 1 overturned (ump overruled) · 1 upheld (ump confirmed). This is the ABS system’s own measurement — Hawk-Eye optical ball-tracking, not our model.
- 1Ty France — ump said strike, robot ruled strike: upheld.
- 2Dane Myers — ump said strike, robot ruled ball: overturned.
Our tracked-rulebook zone matched the ABS ruling on 2 of 2 — a zone-definition gap (ABS grades a standardized, height-based zone), not our error.