Blue Notes · Umpire Grade2026-04-01
“Solid and unspectacular — exactly what the job asks.”
Umpire Grade
95.1% accurate
Run Favor
runs, STL
ABS Overturns
of 6 reviewed
What this shows — how Nic Lentz called the 163 pitches that were taken (no swing), graded against the tracked rulebook strike zone. He got 155 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▼1 · 1-2 strike called ball
Masyn Winn vs Freddy Peralta - 2+0.13▼5 · 1-0 strike called ball· challenged ✓
Pedro Pagés vs Freddy Peralta - 3+0.13▼9 · 1-0 strike called ball
Masyn Winn vs Devin Williams
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 the ABS system’s own measurement — Hawk-Eye optical ball-tracking, not our model.
- 1Francisco Alvarez — ump said ball, robot ruled ball: upheld.
- 2Pedro Pagés — ump said ball, robot ruled strike: overturned.
- 3Matthew Liberatore — ump said ball, robot ruled ball: upheld.
- 4Freddy Peralta — ump said ball, robot ruled strike: overturned.
- 5Francisco Alvarez — ump said ball, robot ruled ball: upheld.
- 6Thomas Saggese — ump said strike, robot ruled strike: upheld.
Our tracked-rulebook zone matched the ABS ruling on 6 of 6 — a zone-definition gap (ABS grades a standardized, height-based zone), not our error.