Blue Notes · Umpire Grade2026-05-06
PIT @ AZ
Home plate: John Tumpane
“Nothing that'll trend, and on this beat that's a compliment.”
Umpire Grade
94.9% accurate
Run Favor
runs, PIT
ABS Overturns
of 1 reviewed
What this shows — how John Tumpane called the 118 pitches that were taken (no swing), graded against the tracked rulebook strike zone. He got 112 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+0.28▲3 · 1-2 strike called ball
Nick Gonzales vs Michael Soroka - 2+0.09▼2 · 0-0 strike called ball
Adrian Del Castillo vs Paul Skenes - 3-0.09▼4 · 0-0 ball called strike
Corbin Carroll vs Paul Skenes
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.
- 1Gabriel Moreno — ump said strike, robot ruled strike: upheld.
Our tracked-rulebook zone matched the ABS ruling on 0 of 1 — a zone-definition gap (ABS grades a standardized, height-based zone), not our error.