Blue Notes · Umpire Grade2026-09-05
“Called a fair game and let the players decide it.”
Umpire Grade
93.8% accurate
Run Favor
runs, DET
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 136 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+0.30▲3 · 3-1 strike called ball
Hao-Yu Lee vs Parker Messick - 2+0.13▲7 · 1-0 strike called ball
Hao-Yu Lee vs Matt Festa - 3+0.10▼3 · 0-1 strike called ball
Steven Kwan vs Framber Valdez
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 · 0 overturned (ump overruled) · 2 upheld (ump confirmed). This is the ABS system’s own measurement — Hawk-Eye optical ball-tracking, not our model.
- 1Dillon Dingler — ump said strike, robot ruled strike: upheld.
- 2Hao-Yu Lee — ump said strike, robot ruled strike: upheld.
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.