Blue Notes · Umpire Grade2026-05-06
CIN @ CHC
Home plate: Tom Hanahan
“Down the middle. Both dugouts had the same zone.”
Umpire Grade
94.7% accurate
Run Favor
runs, CIN
ABS Overturns
of 5 reviewed
What this shows — how Tom Hanahan called the 187 pitches that were taken (no swing), graded against the tracked rulebook strike zone. He got 177 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
- 1-0.28▼9 · 1-2 ball called strike· challenged ✓
Michael Busch vs Graham Ashcraft - 2+0.23▲3 · 0-2 strike called ball
TJ Friedl vs Colin Rea - 3-0.20▼1 · 2-1 ball called strike
Seiya Suzuki vs Brady Singer
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
5 pitches went to the robots · 4 overturned (ump overruled) · 1 upheld (ump confirmed). This is Hawkeye ground truth, no model involved.
- 1JJ Bleday — ump said strike, robot ruled strike: upheld.
- 2Carson Kelly — ump said strike, robot ruled ball: overturned.
- 3Michael Busch — ump said ball, robot ruled strike: overturned.
- 4Carson Kelly — ump said strike, robot ruled ball: overturned.
- 5Tyler Stephenson — ump said strike, robot ruled ball: overturned.
Our tracked-rulebook zone matched the ABS ruling on 3 of 5 — a zone-definition gap (ABS grades a standardized, height-based zone), not our error.