Blue Notes · Umpire Grade2026-05-02
NYM @ LAA
Home plate: John Tumpane
“A steady night's work behind the plate.”
Umpire Grade
95.9% accurate
Run Favor
runs, NYM
ABS Overturns
of 3 reviewed
What this shows — how John Tumpane called the 146 pitches that were taken (no swing), graded against the tracked rulebook strike zone. He got 140 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▼4 · 3-1 ball called strike
Nolan Schanuel vs Nolan McLean - 2+0.28▲8 · 1-2 strike called ball
Mark Vientos vs Sam Bachman - 3-0.19▼4 · 2-0 ball called strike
Jorge Soler vs Nolan McLean
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
3 pitches went to the robots · 1 overturned (ump overruled) · 2 upheld (ump confirmed). This is Hawkeye ground truth, no model involved.
- 1Francisco Alvarez — ump said ball, robot ruled ball: upheld.
- 2Travis d'Arnaud — ump said strike, robot ruled strike: upheld.
- 3Francisco Alvarez — ump said ball, robot ruled strike: overturned.
Our tracked-rulebook zone matched the ABS ruling on 2 of 3 — a zone-definition gap (ABS grades a standardized, height-based zone), not our error.