Blue Notes · Umpire Grade2026-04-28
“Reliable as a Tuesday: no complaints, no headlines.”
Umpire Grade
95.2% accurate
Run Favor
runs, LAA
ABS Overturns
of 6 reviewed
What this shows — how Nic Lentz called the 145 pitches that were taken (no swing), graded against the tracked rulebook strike zone. He got 138 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▲5 · 3-1 strike called ball
Jorge Soler vs Davis Martin - 2+0.13▼3 · 1-1 strike called ball
Drew Romo vs José Soriano - 3+0.10▲6 · 0-1 strike called ball
Oswald Peraza vs Sean Newcomb
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
6 pitches went to the robots · 2 overturned (ump overruled) · 4 upheld (ump confirmed). This is Hawkeye ground truth, no model involved.
- 1Munetaka Murakami — ump said strike, robot ruled strike: upheld.
- 2Drew Romo — ump said ball, robot ruled ball: upheld.
- 3Nolan Schanuel — ump said strike, robot ruled strike: upheld.
- 4Sebastián Rivero — ump said strike, robot ruled ball: overturned.
- 5Sebastián Rivero — ump said strike, robot ruled ball: overturned.
- 6Oswald Peraza — ump said strike, robot ruled strike: upheld.
Our tracked-rulebook zone matched the ABS ruling on 4 of 6 — a zone-definition gap (ABS grades a standardized, height-based zone), not our error.