Blue Notes · Umpire Grade2026-09-02
“Textbook top to bottom — a quiet masterclass.”
Umpire Grade
96.4% accurate
Run Favor
runs, ATH
ABS Overturns
of 3 reviewed
What this shows — how Nic Lentz called the 167 pitches that were taken (no swing), graded against the tracked rulebook strike zone. He got 161 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▲2 · 2-2 strike called ball
Alika Williams vs Cody Bradford - 2-0.21▲9 · 3-0 ball called strike
Brian Serven vs Ben Peoples - 3+0.13▼2 · 1-0 strike called ball· challenged ✓
Elias Díaz vs Jacob Lopez
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 the ABS system’s own measurement — Hawk-Eye optical ball-tracking, not our model.
- 1Jake Burger — ump said strike, robot ruled strike: upheld.
- 2Brian Serven — ump said ball, robot ruled strike: overturned.
- 3Brandon Nimmo — ump said strike, robot ruled strike: upheld.
Our tracked-rulebook zone matched the ABS ruling on 3 of 3 — a zone-definition gap (ABS grades a standardized, height-based zone), not our error.