Blue Notes · Umpire Grade2026-05-10
CHC @ TEX
Home plate: Adam Hamari
“Corner-to-corner and then some.”
Umpire Grade
90.9% accurate
Run Favor
runs, TEX
ABS Overturns
of 1 reviewed
What this shows — how Adam Hamari called the 110 pitches that were taken (no swing), graded against the tracked rulebook strike zone. He got 100 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 ball called strike
Ian Happ vs Jacob deGrom - 2-0.19▲4 · 2-0 ball called strike
Ian Happ vs Jacob deGrom - 3+0.10▲1 · 0-1 strike called ball
Moisés Ballesteros vs Jacob deGrom
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 the ABS system’s own measurement — Hawk-Eye optical ball-tracking, not our model.
- 1Carson Kelly — ump said ball, robot ruled strike: overturned.
Our tracked-rulebook zone matched the ABS ruling on 1 of 1 — a zone-definition gap (ABS grades a standardized, height-based zone), not our error.