Blue Notes · Umpire Grade2026-04-15
AZ @ BAL
Home plate: John Tumpane
“Solid and unspectacular — exactly what the job asks.”
Umpire Grade
95.5% accurate
Run Favor
runs, AZ
ABS Overturns
of 4 reviewed
What this shows — how John Tumpane called the 155 pitches that were taken (no swing), graded against the tracked rulebook strike zone. He got 148 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▼2 · 3-1 ball called strike
Blaze Alexander vs Eduardo Rodriguez - 2-0.28▼3 · 1-2 ball called strike
Weston Wilson vs Eduardo Rodriguez - 3+0.10▼1 · 0-1 strike called ball
Taylor Ward vs Eduardo 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
4 pitches went to the robots · 2 overturned (ump overruled) · 2 upheld (ump confirmed). This is Hawkeye ground truth, no model involved.
- 1Coby Mayo — ump said strike, robot ruled strike: upheld.
- 2Johnathan Rodríguez — ump said ball, robot ruled strike: overturned.
- 3Ketel Marte — ump said strike, robot ruled strike: upheld.
- 4Sam Huff — ump said strike, robot ruled ball: overturned.
Our tracked-rulebook zone matched the ABS ruling on 2 of 4 — a zone-definition gap (ABS grades a standardized, height-based zone), not our error.