Blue Notes · Umpire Grade2026-05-24
TEX @ LAA
Home plate: John Libka
“A steady night's work behind the plate.”
Umpire Grade
94.1% accurate
Run Favor
runs, TEX
ABS Overturns
of 1 reviewed
What this shows — how John Libka called the 135 pitches that were taken (no swing), graded against the tracked rulebook strike zone. He got 127 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 ball called strike
Adam Frazier vs MacKenzie Gore - 2-0.19▲4 · 2-0 ball called strike
Justin Foscue vs Reid Detmers - 3+0.13▼5 · 1-1 strike called ball
Adam Frazier vs MacKenzie Gore
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
1 pitch went to the robots · 1 overturned (ump overruled) · 0 upheld (ump confirmed). This is Hawkeye ground truth, no model involved.
- 1Danny Jansen — ump said strike, robot ruled ball: overturned.
Our tracked-rulebook zone matched the ABS ruling on 0 of 1 — a zone-definition gap (ABS grades a standardized, height-based zone), not our error.