Blue Notes · Umpire Grade2026-04-18
“Pitchers earned every strike the hard way.”
Umpire Grade
93.4% accurate
Run Favor
runs, MIN
ABS Overturns
of 4 reviewed
What this shows — how Nic Lentz called the 183 pitches that were taken (no swing), graded against the tracked rulebook strike zone. He got 171 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+0.23▼6 · 0-2 strike called ball
Austin Martin vs Pierce Johnson - 2+0.19▲3 · 2-0 strike called ball
Will Benson vs Taj Bradley - 3+0.13▼2 · 1-1 strike called ball
Ryan Kreidler vs Andrew Abbott
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
4 pitches went to the robots · 1 overturned (ump overruled) · 3 upheld (ump confirmed). This is the ABS system’s own measurement — Hawk-Eye optical ball-tracking, not our model.
- 1Ryan Jeffers — ump said ball, robot ruled ball: upheld.
- 2Tyler Stephenson — ump said ball, robot ruled strike: overturned.
- 3Luke Keaschall — ump said strike, robot ruled strike: upheld.
- 4Tyler Stephenson — ump said ball, robot ruled ball: upheld.
Our tracked-rulebook zone matched the ABS ruling on 4 of 4 — a zone-definition gap (ABS grades a standardized, height-based zone), not our error.