Blue Notes · Umpire Grade2026-06-17
COL @ CHC
Home plate: John Libka
“Down the middle. Both dugouts had the same zone.”
Umpire Grade
95.1% accurate
Run Favor
runs, CHC
ABS Overturns
of 3 reviewed
What this shows — how John Libka called the 162 pitches that were taken (no swing), graded against the tracked rulebook strike zone. He got 154 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+0.20▼1 · 2-1 strike called ball
Seiya Suzuki vs Sean Sullivan - 2+0.13▼2 · 1-0 strike called ball
Carson Kelly vs Sean Sullivan - 3-0.13▼6 · 1-0 ball called strike
Dansby Swanson vs Zach Agnos
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 · 2 overturned (ump overruled) · 1 upheld (ump confirmed). This is Hawkeye ground truth, no model involved.
- 1Hunter Goodman — ump said strike, robot ruled ball: overturned.
- 2Carson Kelly — ump said ball, robot ruled ball: upheld.
- 3Hunter Goodman — ump said strike, robot ruled ball: overturned.
Our tracked-rulebook zone matched the ABS ruling on 1 of 3 — a zone-definition gap (ABS grades a standardized, height-based zone), not our error.