Blue Notes · Umpire Grade2026-05-31
“Solid and unspectacular — exactly what the job asks.”
Umpire Grade
94.3% accurate
Run Favor
runs, CWS
ABS Overturns
of 3 reviewed
What this shows — how Nic Lentz called the 122 pitches that were taken (no swing), graded against the tracked rulebook strike zone. He got 115 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+0.39▲6 · 2-2 strike called ball
Jahmai Jones vs Chris Murphy - 2+0.28▼2 · 1-2 strike called ball
Jacob Gonzalez vs Keider Montero - 3+0.20▼5 · 2-1 strike called ball
Jacob Gonzalez vs Keider Montero
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 · 2 overturned (ump overruled) · 1 upheld (ump confirmed). This is Hawkeye ground truth, no model involved.
- 1Sam Antonacci — ump said strike, robot ruled strike: upheld.
- 2Drew Romo — ump said strike, robot ruled ball: overturned.
- 3Kevin McGonigle — ump said ball, robot ruled strike: overturned.
Our tracked-rulebook zone matched the ABS ruling on 1 of 3 — a zone-definition gap (ABS grades a standardized, height-based zone), not our error.